General 318-340 questions

I will buy some 340-360 heads and I will be shopping around for an engine shop. It’s a 72 dart custom. I just want it to be as fast as other mild build cars from the time. No drag racing just back and forth to work and can have the power when I want it. Also currently looking for a larger rear end to take the power along with the brake kit.

Is your 318 stock with a 2 barrel? You will probably like your car more with 300-350 hp. Get a custom cam and valve springs to match. Run 3.23 ( 8 3/4) or 3.21 (8 1/4) gears depending on what rear you can find. Sure grip is a plus, but you can always add that later. What brakes do you have now? That is a really nice looking car.