I'm currently doing a 2 step paint correction on this beat up 370z nismo. My question is, the rockers and parts of the bumpers are darker grey and have some type of film on them. It looks to me that it might be vinyl, I can don't definitely feel that it's raised. Has anybody done this car or know what it is and if it can be corrected? It's a shame if it can't, it's going to looks amazing.