Just curious what would be the best rear section to run on a 91 318is? The Downpipe and front section will be 3" back through the cat, but what would be a suitable for the rear section? I was thinking that a Remus unit for a 325i might work, but I don't know the piping size for it or how the mounting points differ from the 325i and 318is? Also, where can you buy them. Any input or advice would be greatly appreciated. Thanks!
