if it does a sub 5 sec 0-60, i'd be surprised
13.3 @ pod was done FULLY stripped on track rubber (15's), Nick Read did the same time on 15's
don't get me wrong, BB's conversion is pukka, very well engineered, i'd consider buying it if i had a 172 but its not what i'm into for 2 reasons
1. its expensive, but if you ain't got the ££ then its not for you!
2. someone else is doing the work, i love to be 100% hands on in everything to do with my car but thats just me!!! (but BB are the only company i would let touch my car in all honesty, hope to see you on track BBPT!!!)