I can't say I remember a full system on a day 2 car. Sams ol' Roof Duece was about as high tech as it got in my area. Most were a cheap pair of glass packs or turbo's both mounted directly to the headers. I ran about 8"of straight pipe and a pair of turbos. No down or out tips after. I used to be able to lay there with my leg under them to reinstall them after a romp with open headers. They were left on the side of the road or in a drieway many times. Old friends still remember and talk about that sound......I just remember the fumes and the tapping of the mufflers on the floor at idle. Dents are still there. All my money went into the motor!
Here is a neat option, " Love my Purple Hornies"
BIG