Contemplating upgrading the suspension on my '53 GMC project P/U, from its 1/2T [6-Lug] to the 3/4 or 1T [8-Lug] specs for increasing its load capacity and be a stable ride. [I drive a 4-door CK3500 truck]. I want to keep the straight axle design, but am unsure which years can accomplish this feat. I will go with a more modern rear end and create new suspension modifications as necessary. I would rather stay with the stock chassis and build from that, than go after an S-10 or a newer 1-ton chassis replacement.
Granted this change will give the front axle more wheeltread, and the front fenders may end up being flared or widened. Will modify as necessary when the time comes. Figured It'd be better to ask questions first before getting in over my head.

1965 Olds F85 wagon
1969 Olds Cutlass
1965 Falcon Van
1969 El Camino
1972 GMC 3/4T
1972 K5 Blazer
1971 C10
1976 Suburban
1978 Suburban
1930 F**d AA Stake
1989 CK3500 2WD
2000 CK3500 4WD
1953 GMC 3100

1] *Note* All drawings are subject to engineering changes at any given time without notice of: barometric pressure, wind patterns, caffiene, or written authorization of the female.
2] Cash for Clunkers: You can have my truck, after it has turned into a pile of rust in the driveway.