I have not been able measure the trucks (they are not stored at my house), but I have found the following track widths for both vehicles online.

Front Track
1953 3804 56.250
1953 3604 57.125
1953 3104 56.750
1997 C1500 63.580
1995 S10 57.200

Rear Track
1953 3804 61.750
1953 3604 62.375
1953 3104 61.000
1997 C1500 63.580
1995 S10 55.120

It looks like the C1500 is good in the back and too wide in the front (about 3.5” per side). It also looks like the S10 is good in the front but too narrow in the rear (about 3.25” per side). I attached a matrix of the difference.

Track Width Matrix

An S-10 frame with a different rear end may be a better bet (but I don't have that frame, yet). I am concerned that AD-Engineering recommends 2.5" wheel spacers for the S-10 front suspension. Is this something that is required or not?

I will measure the C1500's front tires when turned lock to lock to see if they will fit within the '53s fenders. I will also position some tires underneath at 63.8” and post the pictures vs. stock 56.25” width.

Does anyone know if the frame kick-up over the rear axle will cause an issue with the ’53 bed?

Jim C.