Getting an exhaust installed at a dealer is not going to be a big deal. All my Dinan parts were installed at the Dealer and also my AP Racing BBK. An exhaust install is certainly going to be an easy install for a BMW Tech.
PM me if you would like to get a quote from a BMW Tech - I know a few people have used him for various jobs on their cars and he is on our Chumpcar team and wrenches our E30.
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