I have had my p2 for a few months now and i love it. For me, its not finicky at all. So far its been very easy to tune, and stays that way suprisingly long. Its also super powerfull and will flip ur truck on its lid w/ out even tryin.
When i got the engine, i decided i would upgrade the drivetrain ect when the stock stuff broke. I'm glad i did this, cause it is all still stock after a few months of pretty good bashing. Only thing i have done is strip a spur gear.
Also, I'm running an RD Logics curved pipe. I never have tried it with the stock pipe, but many people say that a tuned pipe makes a world of a difference. If you dont allready have one, you may want to look into one.
Hope that helps a bit,
-Cobra198