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Originally Posted by 1971Stepside
I purchased this kit (2.5") and wanted to give my thoughts for those thinking about it. My set up is a little different than all of the Holley parts recommended as they were not available when I was installing everything. I have a 6.0 sitting on POL stands. 4L80e trans with Dirty Dingo cross member. Speed Engineering Long Tube headers. I had already cut the holes in my trail arm cross member and they are not exactly where Holley have theirs as mine sit closer to the frame rails, but are 4" holes.
The kit fits amazingly well from the rear bumper to the h-pipe. The quality of the kit and the brackets are top notch. I highly recommend the kit over having a shop build you a stainless system.
The downside, if you want to call it that, is hooking up the H-pipe section to the headers. The headers sit lower than what the pipe is. I ended up having a local shop fabricate up some pipe to make the connection. I wasn't too bad to have done, but I could not find a local shop that could do mandrel bends, so I had to go with the old press bends. At some point I will put cut-outs in and have mandrel bends installed.
If anyone wants pics of my install let me know.
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Please post up your pictures, I have speed engineering long tube headers, and 4l60e! I’m wanting to order the 2.5” kit rear exit kit
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