13.3's to 11.8's to Forget it...

I say keep your cam ,use your magnum heads change the converter and gears and work it from there . The rpm range is kinda extended with the 323s and you have to make the most power/torque there . Even though i dont always agree with yr ptc has the best value / quality converter.If your rpm range is 3000-5500 or less make the most power you can there .I dont think its going to require a big cam or aluminum heads to get there.