Hi guys can anyone tell me which would be the best for my 03 Fatty I am going to upgrade the motor to 95" they are both suited to my bike as far as I can tell, the second hasthe cams in the kit the first I would have to buy cams and there is only $150 odd between the 2.  Shit load cheaper even with mail from the states. I put this in the wrong spot before

HD Screamin' Eagle Big Bore Stage I Kit EFI 29860-04A

Screamin' Eagle Big Bore Stage I Kit for EFI Models - 95 Cubic Inches Kit features redesigned cast backplate with integral breather and mounting brackets for simplified installation, and an air cleaner element that does not require oiling.This Big Bore Kit lets you increase your Twin-Cam equipped model displacement from 88 cubic inches (1450cc) to 95 cubic inches (1550cc). The kit includes cylinders, pistons, clips, rings, air cleaner, breather hardware and gaskets. A high-performance clutch spring is included to provide the additional clutch capacity required by the extra power. Requires separate purchase of primary cover gasket. This kit is street-legal when used with stock mufflers. (Not all components shown). This product is available in multiple variations. Be sure to look for the one that fits the specific model and year of your motorcycle. 29860-04A Silver Fits '01-'06 EFI Softail (stock on '05 FLSTFI 15th Anniversary) models, '02-'06 EFI Touring and '04-'06 EFI Dyna models. Requires ECM calibration.

 

Screamin' Eagle® 95" Stage II Black Race Kit, 29775-02B

 

Fits ’01-’06 EFI Softail® models, ’02-’06 EFI Touring models and ’04-’05 EFI Dyna® models.

When stock cams just won’t do. This Big Bore Kit provides the parts you need to increase the horsepower of your EFI-equipped model. The kit increases the displacement of your ’99-’06 Twin Cam 88® from 88 cubic inches (1450cc) to 95 cubic inches (1550cc). Includes Stage II (SE203) cams, 3-7/8" cylinders, 3-7/8" pistons, clips, air cleaner and breather, high performance clutch spring, hardware and gaskets. Requires separate purchase of primary cover gasket and Air Cleaner Trim Ring. (Not all components shown.) All EFI-equipped models require ECM calibration* (priced separately). For race application only

Simmac

There are alot better cams available that perform better than the SE 203 like the Andrews 37's or the Woods 6 for that particular build.
These 2 cams would cost you more than $150 though.

There is a power improvement with the HD 95 kits. But it is not all that great. The SE 203 is a pretty mild cam, as your heads cannot take much lift in their stock form.
The one thing that the kits are really good for is quick turn around. If you are not concerned with that, you could try another route.
Your heads are the issue. They flow bad, and have no room.
If you were to.....
just buy pistons and have your cyls bored
use a different head gasket(most likely com .030)
have your heads sorted out
use a SE 50 mm
select a suitable cam grind

then it might cost a little more, but it would work really well.
But you do get some reward with the stock kits, just not all that much.

I just purchased the 29775-02B kit for my 06 Night Train. AU$648.00 for the kit and I got the billet Cam Plate (extra $$) to go with it.

You will always be able to get a better Cam or more power or something better. I started here because I needed to start somewhere. The factory kit had all of the correct parts in it and I didn't have to worry about selecting the wrong cam because of head limitations or any buying any other incompatable part.

I can't answer your question with regards to the difference apart from Stage II not street legal in the states, meant for race use only (even though we all modify our bikes past the street legal stage) and is usually considered better than Stage I which is street legal except for california in some instances. "Hope I got that right"

Remember to plan for your ignition upgrade as well. Screamin Eagle Race Tuners are cheap now however I run a Thundermax because I was able to install it myself.

The best thing you can do is have a go because you'll love the difference it will make to your bike.

 Hi mate, i bought a 95cu kit from the states of a shop called HOLYMOLY CUSTOM CYCLES the bloke to talk to is Roland, cost me $530 landed in Aus that was complete with wisceo 10.25 to 1 pistons heavy duty barrels  and gaskets  its a brilliant set up .I bought a S-E211 cam from the states as well cost $100 so all in all a cheaps kit that goes like stink ,i,m in the process of getting my heads done here in aus by Paul Hallam ,should get 110hp by the time its all done  hope this was of some help Cheers Speed