Late model 1HZ powered cruisers ( wagons, utes and troopies) are fitted with an R151 gearbox as opposed to factory TD and petrols that are fitted with H150. H150 boxes are substantionaly stronger than R151. How long an R151 lasts behind an aftermarket turboed 1HZ depends on how it is driven I would think. Other than a mismatched or poorly installed/tuned turbo the R151 is the weakest link. While there are plenty of sucessful 1HZ turbo installs out there, there are also ugly ones. Be careful.
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