ok so heres the deal trucks been off the road for 2 years. no sending unit brakes intake ect lifted 5 inches. now i have no power from like 45 on and even lower speeds its boggy. running normal. ect but i have to be at wot to get to 55 or 60 in 4 and 5 gear any ideas

 

How's the exhaust? If it's restricted it can cause a lack of power, more so at high speed.

What do you mean "no sending unit?"