I'm currently running dynomax bullet mufflers that are 18" long and exit before the tires. They are basically real short glasspacks. They are loud and they pop alot. And I mean alot, they are fun going into tunnels and holding it in a lower gear to get it to pop but I'm done with them. They would go perfect on a old school lowrider or rat rod. I miss the deep rumble, but I got a set of the edelbrock pro-flows that edelbrock has on clearance for x-mas. Flows sound real tinny in some cars. Especially ones that are a big box, like a van or wagon.