duster setup?

Hi, new to the Mopar world and cars in general. I would like to set up my duster for the street legal series our local track hosts.

i purchased the car, as a roller and bought a schumacher creative kit to shoe horn a 440 in the car. The problem is the motor is a low compression bottom end out of a truck that was recently in my Cordoba, and i would like to get the most out of it possible. it runs beautifully and thought a cam swap, intake, and better carburetor along with the headers would do it some justice. i would like to get into the 12's or 13's if possible. the car has manual brakes and steering along with a terrible 2.76 axle ratio. what kind of drive line combos could get me into the time range i want keeping in mind a reasonable budget, without touching the bottom end. thanks in advance, Brayden.