That is a point I forgot to make. Until recently there weren't many options for headers for the N/A, so we had to use the L67 headers. That still raises the question, going to those headers limits you options down the road. The primaries are too small for a top swap, and you can't add a turbo.
The reason I posted above is why I left CGP a long time ago. Everyone assumes what works for a L67 works for the L36. The Impala LS (L36) is a lot more common than the Impala SS (L67), so we have a ton of experience with it that the GTP members never seemed to understand. Didn't mean to come off on you like that, just bad memories.![]()