Into a D2, probably more work but Frank points out some of the weekness's in the 80 series stuff:
tpy axle swap w/37's...pics - Pirate4x4.Com Bulletin Board
Good E locker info:
Erik's Toyota Differential info
I've had some pretty darn good success wih this kit over here, pretty easy to assemble and a half dozen guys from over your way have purchased the kits as well and seem pretty happy.
seems the 8" rear holds up pretty well, one of my first "crash test Dummies Alex has been abusing them in his Disco Truggy (4000 pounder) on 39 IROC's for a couple years and he's all about "screw it! I have a trailer if I break it!"
Personally, I'd do (did, on three trucks of my own) detroit in the rear and an E locker up front. That said I might do an ARB in the rear of my 110 only because of snow and ice. It will get an 80 series front up for sure, probably an ARB though as I have a new non e locker 80 series front third sitting on the shelf.
Just my $.002 worth..