I don't know if you have the 4.9 or 5.0, but the exhaust switch would help it greatly regardless. If it has larger tires on it I'd consider grabbing a set of stock 235-75-15 tires. You probably have gears like 3.07. If you wanted to you could grab a rear from the jy to change to 3.55. You're on the right track, just keep it maintained!
Just one more repair...