Any idea if the newer models weigh much more than the older ones with the 4.0?

Besides the change in the power curve, adding more and bigger goodies can push the weight up.

I'm not familiar with the new stuff, computers and all that, but can the power curve be changed with a "chip" like folks do with other cars/trucks?

What's the issue with the oil changes? Accessibility to the filter canister? The drain plug?

I'm glad I have my '01, 4cyl, 5 speed, crank windows base model. I think if the engine or other drive train component goes rebuilds will be the ticket.

The desert is a true treasure for him who seeks refuge from men and the evil of men.
In it is contentment
In it is death and all you seek
(Quoted from "The Bleeding of the Stone" Ibrahim Al-Koni)

member of the cabal of dysfunctional squirrels?