That sounds like my problem, no power and crappy mileage. How many miles are on it? Mine has like 260,000, and it burns a lot of oil so I think my problem is it's just worn out and old. I'm runnin' 36's with 5.29's and I'm lucky to hit 60 on a flat road and forget about inclines!!! My freind is runnin' 39.5's and 5.29's and he can smoke me, he has a rebuilt 22re with a cam and header. So if it doesn't have alot of miles I'd say check your timing and plugs and such. I've messed with mine alot and nothing seems to help. Thankfully the only time I really drive it is when we are going wheelling.