Sorry I'm late, been super busy. F360C is correct about the mufflers needing to be seriously revised. I'd tell you what the part number is, but I don't know it. If you really want to know, I can probably find out after I get back from SEMA. But unless you are a pro welder you REALLY don't want to try this as a DIY. Even with the jig already made it still takes about 10 hours of cutting, grinding and welding to make a set of cans that fit perfectly. Remember that Magnaflow doesn't make mufflers for the Z4 M, that's why I had to go the custom route.
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