Go cheap in an A-body and you'll regret it most cheapo's fit like crap in A bodies, and require heavy mods in some cases, atleast on the drivers side, and hang way to low to boot. The passenger side is cavernous compared to the drivers and cheapos work there fine in most cases. To bad you couldnt buy headers individually and go TTI for the drivers and cheap on the passenger side . I bought TTI's for the Duster and was very pleased with the fit, just a few minor mods since all cars are not built exactly the same. But if you like a challenge and want to save some dough go cheap, but whats your time worth to you. Your working with a B or E-body it looks like from your sig so cheapos fit quit a bit better in those body styles.