I totally get you on the time factor, that is why my 78 project has been untouched in almost a yrI guess for $75 shipping I could buy some pneumatic shears from harbor freight and go get a 18 gauge sheet of metal for another 60 or so.
I just figured by the time I run around and buy things I don't have and buy the materials then spend the time cutting them $190 might not be that bad of a deal. yes I was just going to tack weld it every few inches around the to and front, then drill and spot weld it around the bottom braces and add a small piece of angle down the rear for support. (And since I work a real job when I am not working on my hobbies those 4 hours getting and cutting could be put towards installing and finishing.)
I could go with a heavier steel for a little more money. I just thought 16 or 14 gauge would be over kill.
I am thinking of bring the frame somewhere and tell them to call me when it is perfect and black!
my lack of time has me looking at every way to same time and as they say,time is money,you have one or the other but never both at the same time!
I now gladly pay to buy some things prefinished so to speak as I have to put a big price on what little time I do have
If you add some maybe small angle steel around the bottom to spot it to and use the original mid area support, spotwelding the 18 should be fine
no real difference than if it was factory fitted inner liner I guess
after all,you are not trying to make a dump truck box to haul huge ass rocks!
and then I look at the other side of the coin, I get to buy a new tool !