Neoprene is great - picked some for the TJ from seatglovers in the US (ebay) a while back and better than anything I've seen locally. The dog vomit just washed off... honest.
But for the KJ the options I;ve found are mopar 1200 for front and rear but only up to 2002 from what IVe' ben told . Or wet okole for all years US$700 front and back plus shipping
Or go local and canvas which would be better
For now, given the price of tyres, lifts and gears, disposible super cheap at $50 for a full, badly fitted set is good enough for me.
But the Wet okole's are on the wish list.