Help on 340 combo

well i just got a killer deal on a set of mopar springs cal track set up shocks and shock extenders for $300 of a recked race car a frind of mine is parting out cant pass that deal up, 1 step at a time starting out back, up front i have 3ways set at 90-10 car with me in it is just over 3000 pounds grate advice all also thinking about lossing the victor 340 mybe for a rpm airgap??? but after the rear set up is tweeked.