i have an 03 mach 1 with
forged internals
bbk longtubes
o/r h
k&n

what would be good to do next?
i want to start adding decent horsepower but dont have the money saved up yet for the supercharger. WHATS NEXT?

 

GEARS or throttle body. tuner

 

Dyno tune. Some shops will retune a couple times for free as bolt-ons are added (not power adders). You have the intake and full exhaust so make the most of what you've payed for so far.

 

ported short runner intake, intake spacer, 98 cobra cams, aluminum flywheel, under drive pulleys, throttle body.

 

Whats with the forged internals with intake and exhaust??? Regardless it depends on your goals. If you're looking for 350-360 then cams, ported intake, finish the exhaust, gears and dyno tune, but if you're looking for over 400, then the cheapest way there is a little spray after you finish the bolt-ons, the next cheapest is an eaton swap (should be able to get an almost complete kit for a little over $2K).