408" with 6-8 lbs boost
I guess my first question would be how well built is it? If Mike from MRL built it, I'd bet it would be no problem. However, how was yours built? Was it professionally built by experts like at MRL? What is the current compression? I think I remember reading that builders might plan the compression to be a little lower if the motor is to be boosted. What quality of parts did you use? Big difference between a cast crank with budget brand bearings, pistons and rings and all top drawer stuff. And finally, how carefully was it assembled? There is a big difference between file fitting piston rings and checking bearing clearances carefully with micrometers and using plasti gauge and just throwing parts in. I am sorry, and I do not want to insult, but I'd think these were fair questions.