I have a 1979 Camaro with a 383, K1103 summit cam, 882 performance heads, 4 speed manual, long tube headers true duals( 2.25) with super 44s and turndowns. The exhaust is way to small. I was thinking 2 1/2 but want the 3" for the loudness and a 2 years down the road I want to turbo it. I was looking at the summit 3" true duals with turbo mufflers. I'm looking for under $360 because I also need new headers. What do you all think?