The Borg Warner diff is convenient for a conversion due to the stud pattern but the Hilux diff has by far the most aftermarket centers and ratios available And you can get aftermarket ratio's too. Not to mention you can get alloy and even mag housings for them from the states. For a light car, the 9" is way overkill and absorbs more power due to the pinion sitting so low which is not cool for a smaller donk. V8's don't mind.