You can go for the full 2wd parts. i.e. Fit the x-member, ARB, TCA's, Rack, Steering joint, Struts, breaks, sump, Gearbox, etc.

Or Get a T5 box + mount, prop, speedo cable, Clutch cable?.
Then remove the front shafts from the outer cv, small clip behind the cv boot. Remove the cv joint from the hub shaft. Remove the front diff and cross shaft and cover/ tape the hole over.
Don't know the rating of the 7" diff against the 7 1/2" Should be ok. unless your into drag racing.