I know its not an LSX question, but I figure there is someone out there who might know what direction to go. I am building a 383 for my 83Z. Forged internals, a roller cam with high 230's duration and mid 550 lift (havent exactly decided on a cam yet), and around 10.1 compression. I want to hit the 500 hp mark or close to it. What I cant decide on are heads. I am torn between afr 195's for 1450 or dart pro 1's for 850, both assembled. The rest of the motor has my budget strapped, but if the afr's are worth the extra money and give way better hp/tq increases, then I may go that route. I am just wondering what you guys would recommend.