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.

Along with the suggestions listed, you can also put the car on a diet for pretty cheap. Depending on the exact year of the duster, you can shave 300 lbs off easily.

Example, for race day, remove the back seat. That's 50 lbs (roughly) there. Take out any jacks, tools etc.

Then you can get fiberglass bumpers for 100-150 bucks roughly each from reputable sources. That'll save another couple hundred lbs. Especially on the 73 and newer A bodys with those heavy bumpers. If it is to be a dedicated drag car, remove the radio, ac/ speakers etc.

Ultimately, it depends on just how far you want to go.