Actually, I've seen this done once, and there's a simple reason for that.
If you look at the doors on a mk3 Supra, they are (approx.) 1/3rd the length of the car. In short, they are incredibly heavy and for the. For where the fulcrum will have to be, the hydraulics will have to lift an enormous load, and god forbid they should ever go out. You could lose a leg in a door of that size coming down on it ;-)
Not offhand, best thing I've seen was swapping in the NSX HID headlights. They fit the headlight frame almost perfectly, but some detailed modifications had to be made.
First you must make it work well with the Mk3's inheriant ignition kill built into the doors. If you don't physically turn the door lock when you unlock it, it kills the ignition circuit. I've yet to find the relay/logic circuit for this function yet.