Most of the ones I've seen look like 1/8 metal. No sure what gauge that equates to. I see them on the rear of my GTS , but not on the front. And it is a 383 car. Thinking of adding them,
yea I would on any big block car. I know after 70 they put them on some 340 cars which is cute but I doubt a 340 will ever torque it down like big block power.