i dont totally understand how an engine conversion works but was landybuff talking about the engine compression ratio? i know someone who has put a ED33 (nissan 4 pot) into a landrover series, and they didnt get something right...(i think it was adapter plate for gear box, but correct me if this doesnt add up)....so in first gear, low range, it would idle up his very steep driveway, which i would have thought was due to the 3.3 four pot having far more engine compression than the previous engine!! but any knowledge/corrections that can be passed down on the subject would be great!!