I want to know any modifications that i could do other than intake, header, ehaust, and a turbo

 

cams, internals (pistons, rods , valves, etc.), port & polish.

Decide if you want a Turbo or an N/A build and go from there. The paths are quite different.

 

specifically, cam gears, cam, valve rockers(usually around $1000+), valves, valve springs, titanium retainers, rods, pistons(low compression for turbo, high compression for n/a) if you goto forged pistons you have to sleeve your cylinders because if you dont you will eventually crack the existing FRM walls and have pretty much complete engine failure, FRM can handle only so much extra over stock oddly enough the upgrades you can do on most of the engine are exactly the same in terms of the upgrade