The 47-53 trucks are:
3100 - 116"
3600 - 125.25"
3800 - 137"

The closest S-10 Chassis would be the extended cab trucks at 123"
you could likely make up the difference in the wheelbase by shifting the rear axle back a little. We shift the axle forward on the 1/2 ton trucks on the 116" S-10 to make them sit in the stock position.
With the S-10 you'll need to change the rear axle out to a 4X4 S-10 truck or Blazer to get the width you need so this could be tweaked then. I resell the kit from EZ Chassis Swaps and a couple guys with bigger trucks have used the kit with the 118" S-10 and just shortened up the bedside to the 1/2 length or replaced their bedside with new one's and reused the gate and front panel. Also going that route you'd have to shorten or replace your running boards too.

The question is do you want the long bed or are you just planning on using it because it's what you have? Good used and new 1/2 ton bedsides and boards are plentiful if you'd rather have a 1/2 Ton truck.

Steve

Mongo's Garage
Vintage GM Truck's & Parts
https://mongosgarage.com