Huh, interesting. Found a thread that details most of what would be involved to swap http://www.thumpertalk.com/topic/754605-efi-conversion/
Probably not worth it for me to do a conversion, but I could see this make the list for the next bike.
82 fj40, 99 uzj100, 06 gx470
97 DR650, 05 525EXC, 01 XT225, 09 TTR125, 07 TTR90, 07 CRF50