This motor was put in other applications in the same year with a lot more power. It was stepped down to be a little easier on the driveline of the Dodge. The Cummins is the only medium duty diesel engine in a light duty pickup on the market.
Your motor can stand a lot more power before it won't like it, trust me. You'll be blowing apart trannies, u-joints, and driveshafts long before your motor quits.
The whole tps bracket comes off by taking out the 3 allen head bolts on the pump diaphram cover. The diaphram cover is held on 4 bolts total, 3 of which are the ones shared with the tps sensor bracket. Once you get the bracket loose, the whole thing comes off. Theres a hex head bolt coming out the bottom of the tps that fits into a hex hole on the throttle pivot, which is what actuates the tps. Theres a preload on that bolt that you'll loose when you pull it off, but its not an issue. When you put the tps back on, lower it on to the pivot rotated slightly counterclockwise (I believe) toward the motor until it pops into that hex hole, then rotate it back to where the bracket needs to sit as you push it down, that'll give you your preload back. Don't worry, you can't mess it up. As long as you don't mess with the throttle while the tps is off, it'll go right back where it came. You won't be able to get it on and into that hex hole without the preload, it just won't line up. The tps is all self contained... no springs, pins, retainers... nothing like that.
Once the tps is off, it's all exactly the same as the steps you have there. Also, to take it one step further, look for "grinding the fuel pin" in these forums. Also I highly recommend the 366 sping, as Jimmy said. All this can be done at the same time if you want. Watch your egts with a stock turbo though... you're gonna start pushing a lot of fuel through doing this stuff.
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