Help with Dana-44 front axle pinion seal

[derotoreut]

So on my 70 K10, I originally thought my leaking front axle issue was coming from my cover, but it turns out to be the pinion seal. I decided to replace the seal. After removing the pinion nut and seal, I was reading that many people match-mark the nut and shaft for reinstalling. Should I have done that on my front axle nut? What is the proper procedure for replacing the front pinion seal? I've seen differing torque values, loctite the nut, Silicone on splines, etc. Can someone help me out? I want to get this back together asap.

Front Dana 44 with pinion seal removed



Original pinion seal



New pinion seal part number



New seal looks different then original one