What kind of gaskets should I use when I change my DANA 44 and 12 bolt gear oil on my 70 K5?? I have never done this myself and want to save some cash on the labor. Anything special I should do?? Any first-timer tricks or tips I should know of???? What kind of gear oil should I use?? Sorry for the elementry questions, I always went to a shop to do this. Now I'd rather do it myself!! Blazin' in TEXAS!