I happened on this ad for a new S10 rolling frame custom made for your 1940--50's hot rod project. You can choose many options from 4 wheel disc brakes or front disc/rear drum,.stock or tubular control arms, Coil over shocks, air bags, triangulated link rear suspension, They will build it to your design. Then you bolt your Hot Rod Chevy or Ford body on to this new chassis with the proper attachment points for your hot rod body. We ought to be seeing this frame used on the custom hot rod TV shows.
I didn't see any mention of the engine options. Chevy V6 or V8?
https://toomuchhorsepower.com/?gclid=EAIaIQobChMIqZKs_76A6QIVDxOBCh3LvAVBEAEYASA AEgKm_fD_BwE

or try this:
toomuchhorsepower.com

 

I went to the site and saw they had one project truck for sale. This may answer my question on engine options. It was a C-10 with air bags and a 454 cu. in. V8. That's a big block Chevy V8, So you could put any LS series Chevy V8 in this S10 chassis. That would be most people's choice of an engine.