When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
This is a bit off topic, but, why don't you take a look over at STS? They have a universal rear mount kit for about 3K, I've never really looked underneath the SC, so I'm not sure about the fit on our cars. It seems really solid for 3K, I've been looking into it, but I got sell my s13 vert first.
The SC400 is a dual exhaust. She used the piping from one of the exhausts for the turbo and mounted it underneath the car, which made it a single exhaust. Pretty smart thinking.