Why is my Jeep Wrangler so slow? I need more power, but how?

[TimmersTheWimmers]

Only a 4 cylinder, but Jeeps are small. When I go up a hill I must drop to 4th gear and sometimes 3rd gear! That means I can only go 35 mph up a hill sometimes. Engine only has 50K miles on it. I need power. I plan for a V8, but for now I have to stick with the old 4 banger.

 

[matthew]

We need to know if it is stock or if you have modded it at all.