So yeah the Saab is getting a full 4” exhaust now. I feel like the 4” downpipe only is not enough, need to up the size when I am going to push almost 900hp through it. Need all the flow I can get, 3” and 3.5” ain’t enough. The welder will run hot in soon!
Gonna side pipe it because of clearance issues when trying to get past the rear axle. I have to cut a small tunnel in the body, weld and reinforce since the jack point is directly to the side of the exhaust exit when sidepiping it.