I'm not, I go just until the flange begins to deflect. I'm not sure what was giving way there.
I did v-bands on the dually as the stock cat flange was terribly distorted.
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Nevermind the crappy welds, it's still hanging on. I got these from
www.frozenboost.com, they're right up the road from me. I'd use them again for sure but not on the Camaro. Any time I have an off track excursion I run the risk of dragging something and I had a couple big ones last weekend so I probably have some fresh cracks in the trans tunnel.