I believe the GM 10-bolts in the Rodeos were all geared at 4.56. You won't find a disc braked, 1st gen Rodeo Dana 44 with this ratio, they are all 4.10 or 4.30. But like you found out, if you go to the 2wd 4cyl 1st gen Rodeo that had the drum braked Dana 44, it is possible to get 4.56 that makes for a nice swap without regearing. you just give up the disc brakes. So even though the thought of picking up rear discs when you do this swap may sound nice, be careful of the gear ratios... as the need to regear complicates this somewhat easy swap a lot more.

-Rob