Most is around 180-190whp...But that is with a RIDICULOUS amount of work and a lot of custom parts. Average would be around 116-126whp.....with mostly bolt on externals...Intake, Header, Mid-pipe, Exhaust, Underdrive pully, lightweight flywheel...that sort of stuff...You can pull a lot more with high compression internals, cams, and standalone engine management.
And as stated, searching and reading ...look in the NA subforum, and for your boosted question go to the Forced Induction forum...probably not a single question not answered or addressed somewhere.
