[VADER SS L99]

Only thing I can tell you about mine is that its keeps the headers looking brand new. Underhood heat is the same as stock or maybe a little cooler. No idea what temps people are seeing without the coating. If I had it to do over again I would definitly get the coating just because of how great it looks. If this was a 4th gen, DOHC Mustang or something like that I would say its well worth it because of space but with this car thats not an issue so you probably want to base the decision on looks rather than underhood temps..