i've had this Mac 4-1 for two seasons ... last season, i had an issue with rust on the inside where the collector meets the muffler . Drilled a little drain hole to cure that... this season it seems the chrome muffler is turning yellow .. *sigh*
my conclusion : as far as sound, fit, and design the Mac's really hit the mark . I love the look and sound. ..but as far as quality .... don't expect top tear from these pipes .. the chrome sucks and the header pipes seem really thin to me
i would get them again, and would recommend them as well ... just know what your getting