I have an 87 N/A And my old Rx7 had a RB full exhaust but this time the car came with a CS header. So I want to figure out what a good sounding and free flowing set up would be on this? Like Y pipes, X pipes etc. I have no idea. I'm asking you guys out there. It is my daily as well. I'm not gonna be buying anything from mazdatrix or online. Probably a shop. I'm thinking exhaust works since I am down in AZ and have none of my stuff Anywho. Any tips on what to get? All emissions is off so no cats by the way. Thanks! I look forward to hearing your guys's advise

 

cannot go wrong with RB header and presilenser

 

+1 for the rb stuff. I suppose if you make your own, no bigger than 2.5" pipe at any point.