I have just sanded my 81 camaro down to bare metal and filled the small dents and quarters to roof seam. I am treating the metal with right stuff formula 3000 deruster and metal conditioner. My question is what type of primer should I use. Can I use self eching primer over the filler and small areas of paint that are left in the spot weld areas or should I use something different. Also I want to use a high build primer over the first to take out any low spots and scratches.