Hey guy i have a 2007 night train with a 103 se kit. Im looking at doing a s&s 110 with s&s 89cc heads, 635ho or 640 cams, trying for around 11:1 comp, hpi 58mm thottle body,  tuned with a power vision. Does anyone have a similar set up? Im hoping for around 130hp

2 big variables are the exhaust and the guy doing the tuning. A good 2-1 and someone who knows what they are doing those numbers are achievable. Will need to be a real nice set of heads. 

11:1 compression !! are you talking static or corrected after taking cam into account ? Me thinks 11:1 will cause tuning issues, pre ignition on hot days etc. have you tried doing the math on bigboyzheadporting.com

11:1 static.9.1 corrected oll be looking to run a d&d 2-1 id say

640's with 60° inlet close @11:1 on the street will be no problem at all ,could even have 11.25 , 635 HO with 43.5° close @ 11:1 ,i wouldn't ,but if you do let me know how it goes.