79 Trans Am SE

[79 Camaro]

Just an FYI. The SE headers have the ox sensor welded into the collector on both headers. I did have to dimple the floor plans about 3/8" to clear the ox sensor.
I don't typically use the welded band clamps because I'm cheap. LOL.
I buy 3" OD to 2.5" reducers and use the 1" wide band clamps like they use on late model car/trucks. I slot the 3" reducer so the reducer really clamps down on the collector. I add muffler cement just to make sure no leaks.