Ford 300 6 cylinder

im building my 1992 ford f-150 up and i have a 300 6, and i was wondering what else i could do to it. i have a K&N cold air intake and a throttle body off a 460, and a air riad spacer, custom cat-back exhaust with no mufflers, took a/c off, and got a better flex-a-lite clutch fan. but i wanna get more torque out of it since thats mainly what it was made for. but i dont wanna spend to much, O.K thanks