If your gonna open the bottom end forget the 107. You might as well bore the cases for a bigger bore while it's apart so go big or you will wish you did later on. I built my 117" for less than 5 grand

 

Or get a Trask Turbo and run in a totally different group

http://www.turboyourharley.com/turboBikes.asp

 

howwwwl !!

 

YUP!! If I was going to throw $5000 in just performance mods. Turbo would be where the money is spent.

Looking at your picture/avatar looks like you do some mountain riding. There's NOTHING better at altitude than a turbo

 

Have not really thought about a turbo, thing is the bike runs great now, but as I do run in central Mexico and the Mountains here I would like to have more power.

In reality I am a little overwhelmed with all the suggestions. It seems to me like I would be be better off getting the crank trued and welded to be ready to handle a 117 kit and spend the extra dough on the clutch. A turbo would mean I would have to lose my lowers which house part a pretty expensice sound system that I so not want to lose. SO I guees it is going to take some time to save up for.
I know I hav ethe five coming in June but I will have to drink cheap tequila for the rest of the year to get the rest. But all said and done who's got the best set up for a 117 and who knows a shop in southern texas that is real good and can do the work, lord knows I cant.

 

How about a nice procharger?

 

120 still has pressed crank??? Personally I'd have a quality builder do a proper 113-117 but ya really need to decide what result ya want. I would not go over 100 hp without doing the crank/rods and as long ya got the cases apart boring to 113 is a no brainer...