I've always liked Corsa exhausts and install them on any vehicle I own that they make them for. As folks know, they don't make an application for the Caprice, but do for the G8. So I figured I'd just need to extend the Corsa Exhaust a bit.
The header install went pretty smoothly. The toughest part was getting the damned dipstick tube back in.
The Corsa Exhaust went up pretty easily, but the extension didn't just need to happen in the middle, it needed to be done in 3 places:
Connection Pipes
Center/X-Pipe Section
Muffler Tips
A buddy, who's a better welder than I, did the connection pipes with a TIG welder. I used a slip/band clamp for the center/x-pipe section and I welded the tailpipe extensions with a MIG welder and stainless wire. My welds don't look great, but as long as they seal...
Results: The car barks like crazy on start and downshifting at WOT. But settles down to a nice purr when cruising at highway speeds.
Extension with slip/band clamps. I cut a section of 2.5" tubing the length needed, slipped it into the expanded section and wrapped the band clamps around the butt joint.
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Connection Pipes
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The completed exhaust
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Headers with their cool Stage 8 bolts. Won't come loose.
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