Outer Limits 4x4 Board

Hi all. It time to get the mrs a truck and I was thinking of getting a diesel RA rodeo. Am I right in thbiking that they don't have the same motor as the jackaroo, if they do do they have the same injector sleeve problems? Also I hav a 73 series middy cruiser as my fun truck and it currently has 31" tyres on it and I am always scraping the diffs in the toolangi state forrest. Is it possible to fit 32" or even 33" muddies on an ra with 2" spring lift and 30mm body lift, or am I dreaming? If any one else has advise let me know
Thanks

The RA's have a different engine to the Jack's.

Am currently running 31's with a 50mm body lift and about the same spring lift, some trimming of the plastic inner guard near the mudflap was needed