I have a 75 blazer that has a dana 44 front. Long story short I have recently bought & installed new warn premium hubs (Np203 w/parttime)and brake pads. Now my front axle u-joint busted and took out my yokes on the axles so I have decided screw the 3.08 I'm going 3/4 ton with 4.10s. Now I've read that 78 and later had inner locking rings to hold the hub on... My 75s front is the same so I'm assuming that it has been swapped with a 78 or later, correct? Or is that part of the part time kit (already installed on the truck when I bought it). My question is if I want to use my hubs and pads I just have to find a 3/4 44 with the same style hubs I have not the large bolted on ones correct? Do you think 4.10s would be too much gear, my 33s (about a hair over 32") currently rev at around 2500 at a comfortable highway speed, I thought it was a little high but I did check my gears and they are 3.08s. I could really use the lower gears off road since my 305 can barely turn the 33s in 4lo in the deep mud.