I am about to do an interior of a 71 Cuda. I have never used vinyl dye and wondered if some of you thst have could give me some tips and recommendations. I seem to keep seeing SEM as the brand of choice. Also, what do you all think of the panels I have at present. Will they really clean up and look close to new after being dyed, even the hard plastic parts. Does the dye really penetrate these? Are they too rough? I just hate to spend the $ on new ones. Thanks for your help.