They did do an XR3 Turbo Technics kit, but I doubt it fits the MFI management let alone the EFI one.

On and they are rare as fook to find and to do it on an XR3i your looking at spending about 3k anyway. So not really cost effective.

The best thing you can do it buy an RST engine, Loom, and ancilleries off of some of the lads on here. Should set you back no more than a grand.

Hope this helps.