Hey Dyno --- one more rear end tidbit. 1.5 T dually Chevy truck axles from 55-59 are easy to fit and the wheels (19.5 as I recall) have the same lug size & pattern as 41-52...you just need to open up the center hole a bit. The wheels will take tubeless radials and there are more gear choices as well.
Now the bad news...they are scarce as hen's teeth. But ya' never know...one might be just down the block from ya so I thought I'd pass it on. I believe it was Grigg here on the Bolt that posted the info a while back.
Best of luck & happy hunting.