trucks a 96 XJ 6 auto.  I'm really only a novice mechanic but I do the small things I can.  Reds been easily used but I don't think she was maintained as much as I'd like see it.  I'm wanting to replace the things I can just to make sure everything runs as smooth as poss.

So far I've replaced..
plugs
wires
distributor cap and rotor
fuel filter

have plans to replace..
exhaust manifold (hole)
oxygen sensor (is there possibly both a front and a rear?)
coolant thermostat
coolant temp sensor

Anything else along these lines I should go ahead and replace?  Thanks  

if it's in the budget, do the hoses when you do the thermostat and sensor and refill with new coolant. don't forget the belts. other than that, you're on the right path.  

thanks mr man.  got hoses on the list now.  only 1 belt and it got changed last year so good there  

I would flush out the block and radiator then put in a new water pump and radiator cap....had to do that to my truck at 92k miles  

Oil and Filter.

Duh, I know, but you didn't have it listed.

Front and rear diffs.
Transfercase and Transmission oil.
Re-Charge the AC.

Thats about all I can think of...  

and don't forget the windshield wipers!! lol  

not a bad idea to flush the brake lines and master cylinder.