Mac is always hit and miss on fitment. Would not want to be the guinea pig. Had an entire exhaust system from them that looked like it was welded together in a jig that someone ran over with a fork lift.
For the price point I am not expecting top quality but hopefully fully coated unlike thee partially coated BBKs I got. The guy Manny at MAC seemed cool, knowledgeable and committed to a good product. **** happens, hopefully they have improved QC since you got your set?