Hill Bill E.
Oath Keeper
Im trying to keep it as light as I can. Can I use 1/8" or do I have to use 3/16"?
Depends on how the frame is formed, and how you plan on using it.
The M416's are not real heavy steel, but built in a way to take the abuse.
Unless you have a metal brake for bending, I would go with 3/16" for the frame and tongue.
I tow my M416 w/RTT on top all over, with my CJ that has a worn out 258 CI carbed inline 6, and my TJ with a 4.0L
Only places I have had big problems with lack of power, were bucking headwinds in Nebraska, and some of the mountain passes through Denver, CO.