Hey guys, gotta hop in here on this. I've been fllowing this, and have also read heim30s other posts. The truck in question is a K20 (we cleared that up in a different thread), so a conversion isn't the issue, but rather updating an existing 4x4. Swapping to later axles is no big deal, the mountings are essentially the same. You would want to get them from the same donor truck, I would suggest a '73-'81 K20 (later if it's a HD version with the full foat rear) or from a '79-'87 K30/'88-'91 V30. The latter has a heavier duty front axle and brakes.
