Ive used it before you only need bare metal for the por15. Which I will use for the rusted areas then the chassis cote over everything or I can use the self etch primer over the por 15 and repaint with the factory color. I did my rear axle with por 15 and there black cote and I did my factory a arms with it.
Last edited by Fast92RS; 02-15-2007 at 08:07 PM.
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