If this is a race chassis, powder coating is not a good idea at all, any crack in a weld will be extremely hard to see and harder to repair.

Ronny
6.789 @ 198.63 **.956 Brand New 60'***
4.17@ 169 1/8th mile
John 14:6

https://www.youtube.com/watch?v=TUku_hjYRh8