I have restored many cars,I'm also in the car audio business ( which requires a lot of custom interior parts which have to look factory most of the time)... You first have to start by cleaning everything extremely well with a degreaser and when you think it's clean enough then clean it two more times.Then wipe it down with a wax and grease remover. The only dyes i will ever use are made by SEM,They are the best on the market,you can get it from any bodyshop supply or online from eastwood.com. before you start spraying color you first must spray on their adhesion promoter then spray the dye on within about ten min.Use about three light coats,the first coat should only be a dusting,the next two should only be slightly heavier,don't try to cover it all at once, then you should let it sit at least 24 hours before re-assembly. I have had great results with this method. Have fun with it! don't sniff too many fumes!