Who is running Prc stg 2.5 5.3 heads on there 5.3's? I just bought a set and I'll be getting the put on soon. I just wanna know what you guys think of them. What you like and what you don't like? A guy in town said that he has put 3 different sets of ls6 Prc heads on firebird and camaros, and he was saying that the way they were ported, caused then engines to fail? So can anyone with them on any size engine chim in, thanks