I did a S3 conversion about 25 years ago. Used a 351 clevo I rebuilt with C4 auto mated to a S3 transfer case with a Marks adaptor and replacement C4 mainshaft which uses a jack shaft between the C4 and transfer. Used some super low ratio transfer gears, can't remember what the ratio was but it was superb offroad and unbelievable onroad. I used a ford 4 core HD radiator, bigger fan and thermos as well. All of this was just able to control the temps when offroad lugging with a load and trailer attached. I converted the front with 110 doors, guards, bonnet and radiator panel and used a modified front RR diff and a widened rear Salisbury (both 3.54 ratio) with a MD fitted. Had to move the front crossmember forward, used the Ford XY/ZD ram on the drag link for power steering. It was a big project and I was very happy with it but in the end the cost of running it was too much. Theres a couple of photos of it in another thread, Series 3 disc brake conversion, I think its called.
Cheers......Brian
1985 110 V8 County
1998 110 Perentie GS Cargo 6X6 ARN 202516 (Brutus)
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