I use .023 on thin like body pannels but floor pans and structure i use .035.But i punch holes around the out side of the pans so i can spot weld and grind them off. you can't even tell after you are done.


1955 GMC Big Window
1957 Chevy 1.5-Ton
1959 Chevy Short Fleetside
Plus lots more ...I LOVE THESE TRUCKS!!!