I as baldeagle use por15 on the frame and have to agree it is one tuff coating for frames....and I believe I as baldeagle am going to go the same route as advised from Fatfenders with the use of ZR on the inside of the cab. nobody in my local area does soda blasting. I don't have a screw compressor to do it with and my ingersol rand will get to hot doing such a lager area. So my question is this........ How clean does the surface have to be useing ZR. I know with POR15 it doesn't require a surface
