Stock is the single pipe system below.
The dual system was built for an 84 using an Eastern Cat for 85, and a few magnaflow units. Quiet.
Note the same side offset on the mid magnaflows. See the arrows --- system was built for 5 spd, but when fitted to 84 automatic trans car the passenger side magnaflow was too close to the trans fill reservoir. Its on a manual 84 car now.
And someday I'll have the tips reworked / do surgery on that final muffler to bring them together.
There are lots of options for self-built systems. Not shown, but desireable, would be Y-down pipes, to single high flow cat, to single rear muffler, single tip.--- something similar to the next post.
