The colombian made Series 90 comes with a rear axle made by Transejes de Colombia (DANA) and the BIG difference is that the third member contains a non standard DANA diferential, model 207, made for the Hilux (Brazil, Colombia, Venezuela) and the Prado (Colombia, Venezuela). This is a major set back for owners of colombian made Prados, because we can't use all the aftermarket parts for the Toyota 8 Inch V6 Turbo Differential. The axles are Toyota, but the differential is not. Another BIG difference is that the this Dana differential is weaker than the Toyota 8 inch V6 Turbo. (not that you will break it, but when you are buying your Toyota 4wd you expect the Toyota quality an resistance). Why is it weaker you may ask, well the BIG difference is that it only has two pinions (planetarios) inside the differetial carrier instead of four, also the differetial carrier is adjusted in the thirb member housing via shims and not with adjustable nuts.
If you want to improve your rear differential in the colombian made Prado, you'll have to change the third member with gears and all, for an original Toyota one. It will fit the axle housing with no problem. I looked into the matter and a complete third member with a Detroit TruTrac and 4.3 gears came to USD1400.
If anyone wants the service manual for the DANA differential in the Prado email me. It was given to me by the training area of Transejes de Colombia (DANA).
For in dept info on Toyota 8 inch diff go to:
www.gearinstalls.com