4 cyl. owner here! I bought my '97 (it's actually a '96) Jeep in 2000 with 55,000 miles on it. Now it's at about 160k. Off-road it's just fine, and has probably helped keep me from breaking more parts. In deep snow, I very occasionally wish I had more power to keep the tire speed up in 3rd gear, 4-low. But I have never been denied any trail or obstacle because of lack of power. The blasts through deep snow are usually just for fun, I have had better luck crawling and staying on top. (although some friends in Canada have even better luck with 500+hp and 46"+ tires

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Around town it's just fine, but I do wish I had more power on the freeway in the hills or with head winds. Especially with 35's and the higher 5th gear of the NV3550 transmission. But with correct tire size and gear ratios as well as keeping the Jeep light, it is very liveable in my opinion.
With all of that said, I will some day swap in a 4.0L or Magnum V8. I think the project would be fun and it would be nice to have more power on the freeway, as I live in a mountainous area. But, then again, it is kinda fun to put it to the floor and power up an obstacle in the mud or snow, and surprise everyone that didn't make it that your Jeep only has the 4 cyl. (even though the engine size had nothing to do with it)
