Hey Armond, I don't know all of the specs and tech stuff on the 80's but here is what I think. My mom had a 1995 80 series and my brother had a 94. I "the unlucky one" had a 91. 90 to 92 had the 3F-E. Very similar to the 3F found in the 62 series. Let me just say this, the 3F is very capable in the 62 because it has 155 hp and 219 lbs of torque, more than the 2F found in 40's and 60's series. Now, the 3F-E in the 90-92 year 80 series just doesn't work well with that truck. To me, it is like they rushed to put out a new body style without thinking about the motor.

You rember the early 90's, it was all bubble shaped vehicles and no hard lines. 1993 to 1997 had the 212 hp 1FZ-FE, the only way to go. After driving all of the family member's 80 series mine was the only one that I didn't regret to see leave the family.
As far as factory lockers, it depends on the seller. Do they even know what that knob that you turn is? Generally though, that is a selling point but not a huge price difference.
I think the anniversary edition is worth a little more. They also had a collectors edition in 97 that was not as sought after as the anniversary edition.
Hope this helps.