Well i think I finally figured put my power loss issue. I think the clutch is starting to slip under full throttle. I don't smell it yet but I am losing power under full throttle and everything else checks out. Its got 130,000 on it so I'm sure its on its way. Anyway trying to decide what is the best for what I do. Its a work truck and I tow between 5k-20k almost every day. usually closer to the 5k side. I have been looking at the south bends and not sure which one I should go for. i think the one rated for 550 hp is plenty but overkill is good too.eelout I am only doing a Smarty Jr. and thats it for power mods. I just need something will good grab and as close to factory pedal pressure as possible. I already have one leg that is bigger.:lol3: Going to try and baby this one a while longer but i want to be ready when it lets go. Gotta love used trucks.