Yeah I've decided to do these as my final list of maintenance at 74k:
- replace oil and oil filter (castrol 5-50 & OEM oil filter)
- replace air filter with k&n drop in filter
- replace rear differential oil with Redline gear oil 75-90
- replace the cabin air filter with OEM air filter
- top off brake fluid as needed (my brake fluid look very clean)
- top off power streering fluid (my pw steering fluid also look very clean)
- tomorrow I will replace the drivebelt and ac belt (belt look somewhat worn)

I've decided to hold up on the fuel filter and spark plugs like withidl recommend.
I will do all that when I reach 100k, and also tranny, transfer case fluid.

Thx