Anyone beefed up a 12 bolt rear?

[1972C10]

I did a little wrenching On my nieghbors 93 gmc 2500 4X4 It has one of them "light duty 14 bolts" 6 lug they seem to be a tad larger axle than a 12 bolt but still taper down

Not near as strong as a full floater IMO but I was eyeballing it pretty hard thinking it would be a good upgrade for my 88 with a 10 bolt for the main reason same style 6 lug pattern Because i run 00 Z71 wheels and a old style 6 lug 12 bolt would require me to get the center of my wheels bored out .

Im not too sure if it would be worth the swap from 12 bolt to 14 bolt sf