what kind of hp numbers do you guys think i can achieve with a d16 fully built around 14.5 cp with crower or similar stage 3 heads and itbs

 

define "fully built."

what's a "stage 3 head" and why do you need more than one?

it's generally frowned upon to make horsepower estimates in forums like this. i can give you a link to an article with methods and formulas for estimating potential power output. if that won't satisfy you, then i say built it and find out!