I've used Eastwood's heavy duty anti rust too, it's black, thin, runs into panel seams, and is 'self-healing'.
https://www.eastwood.com/eastwood-he...-in-black.html
The internal frame stuff is green, and you have to be careful when using it, if it shoots out a small hole, it can go everywhere.
You can see some of it on my build thread, but I just spray bed liner over it and it's done. On stuff you don't want to use the bed liner on, wipe off the frame coating or anti rust before it dries.
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1970 GTO Judge Tribute Pro-Tour Project 535 IA2
http://forums.maxperformanceinc.com/...d.php?t=760624
1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car
https://forums.maxperformanceinc.com...ght=procharger
Theme Song:
http://www.youtube.com/watch?v=7zKAS...ature=youtu.be