We discussed the ability to use a 3" X-pipe and 3" mufflers while expanding the 2.5" inlets of the tailpipes. I seem to remember it is doable but not a bolt on. With 530hp, that would be perfect if you could do it that way. 3" simply won't fit the transverse configuration.
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About 73ta
Cars
1973 TA, 2000 BMW 540I
Biography
Have been a: Automation Engineer/General Mills, sound & video tech/Warner Bros.& Columbia Pics, Journey