So I bought an 84 gl 4x4 and a front outer CV joint blew. On rock auto I found replacement out joints, but they only have 1 for 4x4. This car still has factory CV shafts as it sat for a long time. I saw I can use FWD CH shaft assemblies, but in a post I cannot find now, I remember something was different. Is it the shaft diameter? Cause I'm hoping it's the same cause I can only get 1 for 4wd but I can get 2 or more for FWD.... Help?