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4" Exaust System
I have a 99F250 with a 7.3 PSD and it has a Catalytic Converter on it.
Should I leave it on when I replace the the stock exaust with a
4" exhaust system????
Also what is the best transmission fluid to use???[/quote]
Last edited by Cobrajet : 12-03-2005 at 03:03 AM.
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