What's the bottom line on high performance coatings?

While our T-78 kits are en-route, Matt and I spent a few minutes at HPC near my home looking at their various coating options. Our plan is to have our turbo housings polished, then coated with a thermal barrier. It also happens to be a high-gloss silver appearance finish. They claim it's good up to 1300 degrees f.


We're also planning to have the downpipes and mid-pipes coated internally and externally, and the same for the exhaust manifolds. I'm also thinking about having the valve covers externally coated and then having them teflon coat the inside surfaces. All together, my bill would be around $550. Not bad, but is it worth it?

For daily drive and occasional drag racing, should we expect ever to hit 1300 degrees? I'm guessing that a road course car may hit that level, but what about our application? I'm interested in the heat prevention and aesthetic benefits, but I don't want to shell out money for coatings that will flake off or burn off.

What are your thoughts and experiences with coatings?

Thanks,
John
www.utahracing.com/supras/john.html

P.S. Their website is www.hpcoatings.com