81 4x4 conversion

[05Gibbs]

ive got a 81 shortbed 2 wheel drive truck and im going to convert it to a 4x4 i have the engine, trans, tcase, axles, and going to be going with a 6in lift so all that is covered and im going to build driveshats but i was doing some searchin on here and found out that the 3/4 ton and 1/2 ton stuff is diff. the front frame clip i have with all the brackets is is 3/4 ton. im just wanting to know what all i will need to find thats 1/2 ton specific and what will and what wont work...any advice will be much appreciated....thanks