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Reply to "180 degree headers"

I don't think there are any performance issues.
They are a little load at idle in a confined space but the stock mufflers aren't too quite either.

They certainly aren't restrictive which is more then you can say about the stock mufflers.

The tubes could be too large for a stock engine at 2" but if you can run to 7000 or more they are a treat and a song to behold.

Mine exit at the stock location so nothing needed to be relocated for them.

The largest issue is that if you want trunk space the modified trunk is about half of what it was.

Hall Pantera used to sell them. I just modified my original one.

Make sure that you insulate the bottom of the trunk with that space age fabric and don't carry any living thing in there.

Well maybe your mother-in-law?
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