I will have a set of 2.94 gears available very soon, but not a whole rear axle unfortunately.
From my research, you can get suregrips from late model jeeps (Jeep libertys) and Dakotas up to 93 or 94 I believe, but there was a year where they changed spline counts from 27 to 29, so you need to double check that. Check ebay for 8-1/4 stuff, I bought a used set of 3.55 gears from a Jeep liberty off a vendor there for $110 to my door here in Canada.