Being an old model car, it kinda depends on your luck on how clean a car you can get and whether you are patient during frequent visits to the garage for maintenance.
It's a good car for the desert. I drive a manual XJ and I prefer the manual to the automatic version especially for desert driving.
The car also is prone to over heating and the cooling system might have to be upgraded.
Go with original mounts, as you don't change them often and they should be good for next 4-5 years. Why take chance for half the amount, every time I trust un-heard brand I regret later.