I think the aprehension is the knowledge and the fabrication skills required to set up the rear suspension. Updating the Mini engine with another up front is relatively straightforward as the overall suspension setup/design can be retained but I'm sure there's much more work involved in the design and fabrication of a suitable rear subframe (or an IRS setup??) that works well and integrated properly for use with an All Wheel Drive system.
I would attempt (and am doing so) the Starlet GT conversion in the front but would baulk at any more than using the standard Mini "building blocks"
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-Alan
I blame my dad for my love of minis. I think I was conceived in the back seat of one
I also blame my Dad for me being 6' 1" - not really the optimum height for driving a Mini.