If you have any fab'n skills, you can make your own brackets. ORU is a major waste of money. I bought one for my 89, tho it was nice to just drill and bolt, it ain't worth it. I'm sorta making some brackets for my 97 to run 52" springs for a cheap and easy lift, and an easy ride. Like Jim said, get a Ford front end, that way you don't have to change the transfercase. A freind of mine has one out of a 3/4 ton, has the heavy duty hubs, 4:10s, flat tops. This would be fine for a street pounder or mild wheeler. To keep you 6 lug, find a GM Dana 44 and swap everything from the knuckles out. Now you have 6 lug, and a front end that won't explode. (Which is what is gonna happen to that IFS VERY soon!!!)
AND DON'T EVEN THINK OF A B/L THAT SIZE!!!! NOT ONLY IS IT GAY, IT'S INCREDIBLY DANGEROUS!!!!