Volvo 1030 diffs use Jeep gearsets, no problem. I have posted the correct information on TB when my memory was fresh, but I think the ones you need are forward rotation, standard pinion length.
1030s all use the same pinion offset, and you won’t have to worry about the different offsets that genuine Dana 30s have.
Volvo 1031s are all different in the ratios. You can buy shorter ratios from Sweden, but they are MUCH more expensive than the Dana bits from the USA. When I did it a decade ago, it was $400 vs $1300 - and the Aussie dollar was better then.
Edit:
The axles are the weak point. I would not hesitate to use a 1030 over a 1031 because it won’t be the CW&P that break first.