Hi everyone I have been lurking here for a few weeks and I just purchased the udm pro kit and cant wait to get it. This company is great to work with and Meghan is awsome. I have a question I own a 1990 BMW 325 IC and I have heard that from 1990 on there is a clear coat on all cars but how would I know for sure. I have polished it with no paint on my mf's is this an indicator. I would like to find this out before any boo boos. Also can I use the udm on plastic bumpers or will this hurt them. Thank you guys all your knowledge is great. Doug