HurstGN: Have you used the POR 15 Engine enamel?
Gary,
Yes. I used their black and silver about 8 years ago (maybe more...I suffer from CRS symdrome). It worked well for me. Absolutely no complaints, and tough as nails.
If you deicde to use it, follow the directions, especially the part about wearing gloves. Once you get it on your skin, it's there for days. I learned that lesson the hard way.
