MRME-There is also that Jeep kit I keep seeing. I googled it - Revell 1/25 '03 Jeep Rubicon. Not sure if that wheel base would work but you might be able to modify some of the components. It's not 40s-50s but that basic design hasn't changed much fromthat first 40s design.
And for photo reference, the kit I working on:
I too have begun work the kit. I had 2 days off, my first in a month so I had to take advantage. Sorry I'm breaking the rules but I couldn't waste my limited opportunities. I'll wait for Jan 1 before posting wip.
Gord