3rd gen housing in a 4th gen

i'm almost certain you'll need to modify the drum brake flange to accept the caliper mount in some way

i'd find a disc rear end if i were you, and just use the 3rd gen disc brakes. honestly i always liked the 3rd gen rear brakes more anyway, they're a real caliper instead of that totally oddball widget they stuck on the 4th gens.

im going to go with a 9 inch eventually just tryin to just buy rear wheels once and i got this rearend for free and just hate to put any money into a 10 bolt lol

oh well if its temporary just run the drums that came with it, a lot less trouble

drum brakes on the back aren't even that bad