1st thing,

should i bore my barrels or buy (for example) the Revolution Performance kit as they have pictures showing a cross section of their barrels against the standard HD 96ci barrels bored out and there isnt much meat left on the standard ones after ...

I have an S&S 106 kit on m bike and so far couldn't be happier with it

I would buy the whole power kit from Dan Vance racing for $2096 US. Guessing $3000 landed then sell your top end.

www.danvanceracing.com

The fuel moto kit has certainly had my attention, really was hoping for some insight into the standard jugs being bored.
Can they handle the new bore size or best to get aftermarket.. ?

I just had a stock set bored out to suit 98"/107" (3.938") with no problems at all.
They have been doing this for some time in the US.