Well, i've never had a problem getting parts out from USA.

Some company's ship to your door, i've always used the normal air mail no prob.

I would stick with the S&S, the 93" is a good motor 4 1/2" stroke. just remember to retention everything like barrel bolts head bolts engine mounts every few 100k for the first say 2,000k & you should be right. thats if you ride hard.

i had no problem at all riding a 98" kick start shovel with velva touch hydralic lifters. hope the motor has hi po hydralic lifters?

But a mate of mine, rides real hard, and does not check nothing, he had a loose top engine mount still riding hard did not know & broke one barrel ( S&S BARREL ) you would think he learnt but less than a year latter broke another s&s barrel & piston as never retentioned nothing just rides. so re tention all those bolts and you'll be sweet cheers mate

I don't know about Ultima, but S&S I used S&S barrels flywheels carbs from the early 80's no problems road my last shovel before selling it about 1 million k's, and i also drag raced it, ran 11.5's 113mph.

Have a few mates that still have s&s Shovels, but all are 98 inch & all use HD cases  ( welded up ) or House of horsepower , Delcron, Treese. i've had nothing to do with s&s cases so could not say. if it was me i would use John Treese cases ( aussie made ) and s&s barrels Flywheels oil pump, stock cast HD heads ported by Cow at LA cycles syd but the carb is the hard part, i always used an S&S D, but these days i'd put Autronic ECU & TB about 51mm. but thats me.

good luck

Try the Customs and Border Protection Service website. Vehicle/parts import tax. I'd insure the freight too...

Can't seem to cut and paste the link. Hit the website and try the "Working TariffsPage"