318 build. what would you do?

i have a 82 318 with flat top pistons and who knows what cam. its got 4027598 heads on it. and a 650 Edelbrock. i have heddman headers for it. and i want to get the most hp and torque i can get for less then 1500 bucks. no nitrous. all motor. thoughts?:spam1: i love it