Well, my 450 "Laid down" (approx. 30 minutes from throwing the rod through the cases) about a month ago and I just got it back from Moto Wrench today and all I have to say is HOLY SHIT ITS GOT SO MUCH POWER 
Since the AMA pro singles fees are ASTRONOMICAL and there id good money to be made racing premier outlaw series (WCVDTS, WCFTS) and the local tracks that run all the time its worth it to say 
to the AMA's displacement rules and ride something with some REAL power. About 75 to be exact. It was built by a REAL rocket scientist and his craftsmanship is PHENOMENAL. Went from a worn out 35hp southland racing motor to this red rocket 
is like going from a vw thing to a corvette. Heres some basic build specs for y'all
Bored and stroked to 511
Stage 2 Hot cam
Head work
Race Clutch
Carb tuning screw (essentially an adjustable jet)
High Performance water pump (to cool bigger motor)
Overall EXTREMELY satisfied with the bike!! PM me if your in the Simi Valley area, and you need a good reliable mechanic.
Since the AMA pro singles fees are ASTRONOMICAL and there id good money to be made racing premier outlaw series (WCVDTS, WCFTS) and the local tracks that run all the time its worth it to say to the AMA's displacement rules and ride something with some REAL power. About 75 to be exact. It was built by a REAL rocket scientist and his craftsmanship is PHENOMENAL. Went from a worn out 35hp southland racing motor to this red rocket is like going from a vw thing to a corvette. Heres some basic build specs for y'allBored and stroked to 511
Stage 2 Hot cam
Head work
Race Clutch
Carb tuning screw (essentially an adjustable jet)
High Performance water pump (to cool bigger motor)
Overall EXTREMELY satisfied with the bike!! PM me if your in the Simi Valley area, and you need a good reliable mechanic.