rear axle identification, interswap, options etc

[98eb5.4]

expy's came 8.8 & 9.75, i got 9.75 /3.73

when i check out Car-Part.com--Used Auto Parts Market

these options come up
9.75" ring gear, 3.73 ratio, IDs S935C, S935C1 & S935D
(EDIT - looks like these are 97)

9.75" ring gear, 3.73 ratio, IDs S935E, S935F & S935J
(98-9)

from info i've run across, all 3.73 are limited slip, one diff i'm aware of is trailing arm bolts (& mounting holes) got bigger after the first year, but assuming that isn't a big deal as far as working eitherway

at some point early on, axle diameter increased, then wheel studs went to 14mm

i suppose these variations come into the picture with lettering like S935C-C1-D-E-F-J

main question is will any of these 9.75 - 3.73 variants pretty much bolt in for 98?

don't think any were drum brake, dunno if all 9.75 were disc setup? anything else to look out for?

 

[46L281GT]

Should be a tag on the rear end and that code probably corresponds

 

[ExplorerTom]

And on the door sticker (assuming it was never regeared or axle(s) swapped).