It honestly sounds like a larger pain in the ass type of endeavor than it's worth. A great DIY would be maintenance related. Replacing the roof should be a one time thing.
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2011 e90 M3 Space Grey DCT ZCP- eAs, BMW Performance, Agency Power, Macht Schnell, iND, Milltek, Volk, Challenge, Stoptech, Ohlins
BMWCCA:518970
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