85-100 hr holy!@#$%^ that makes repairs pretty intense, justifies staying home and DYI...at that price I could buy a cheap mig and pipe expander and cobble my own. I didn't understand your initial post as a warning, sounds like that system is really not worth it. My B20 is so low tech I have never even thought of a "tuned" exhaust....just 2" pipe with a cheap mexican muffler and a resonator which I figured would not have too much back pressure. I went 2" as the original pipe on the B18 was 1 1/4" or something tiny like that, so I figured anything bigger would be a good improvement. It is also hard to go over the rear axle if the pipe gets too big. Some like to run the pipe under the axle, but that really destroys ground clearance, and I still drive my 220 on dirt roads, old logging roads etc...which by the way is where it really shines
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Patrick, '68 220 (used to drive 240s)