I'm in the process of swapping out and old 2QM20H (still running strong--just had the chance to acquire an GM) with a 3GM30F. The 3GM has 2" exhaust which I assume is OEM specs (none of the manuals specify exactly). But I was thinking I could adapt to my existing 1.5" exhaust system and avoid the hassle of replacing wet muffler and 10' of hose..
I think I found a post or two where this was done.. does anyone have experience with this or strong caution against? Thanks ps. will try and post some specs on fit as I build the mock engine and figure out dimensions, etc;
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