Originally Posted by 
discorevy
				 
			Shack and others have covered it pretty well, and a remap ( from Shack ) is a good move, no matter whether you have a Flashable or chip type.
If you have the later flashable type will need something to load the tune, and until something better comes along, then a Nanocom will pay for itself in other ways as well.
I have sent a couple of upgraded Zf22/24's to Queensland now, strange, surely there must be someone that can do it there, as they are a relatively uncomplicated box, but to summarise.
A V8 converter is a great upgrade, better, stronger and more efficient than a lower stall TD5 one. but the stock one in good nick can handle a well sorted mild tune.
Use a full synthetic Dexron 3 oil, change it out x3 so as to replace about 95% of any old oil, then do a sump drop every 40 000k ( more if it's been working hard)
Don't stress too much with extra oil coolers at this point, unless towing heavy, but as mentioned, try to keep lock up when you're able to, and if you're working the engine hard before lock up speeds, then keep the revs up above stall speed, as this causes fluid lock up and generates less heat.
Definitely low range for soft stuff.
Pay attention to the cooler lines ( especially the swages ) and replace if required.
265/70r16 is a good size if you wanted to go that way, but speedo will read slow by 6%.
Great vehicles when looked after.