Using a w5X. Got a bellhousing for one of those. Trying to find a steel sandwhich plate w57/58 at the moment. I like the ratios of the w55 tho. Would make for some mean acceleration. You know of any w55/57/58s for sale? Been keeping an eye peeled on trademe. Dont really care about the overdrive. as the standard jag overdrive is 1:1 so any supra box is better of standard. As far as i have read, all the "all alloy" supra boxes are the same strength. And the ones with a steel sandwhich plate are slightly stronger (bigger bearings, wider teeth etc)
I wish i was running a r154 But the cost of the conversion tripples if i do that
Edit: Spence bet me to it
The jag weighs about 1700kg so it would probably need to be a rather meaty clutch. I can just adapt a clutch plate to fit the supra spline. So i dont need to go toyota