Good and bad lately.
The good: new Labrak cutting board tailgate, new BFG KO2s. I hated the MTRs that I had previously, and the immediate impression after moving onto KO2s is just now much smoother and quieter those tires are, to say nothing of the traction. They're fantastic on dirt, and don't wander all over the place like the MTRs. Great success.
Labrak's tailgate / cutting board is super cool, too. Functionally, it's going to dramatically improve the camping experience - I couldn't take how gross the 216k-mile old carpet was on the tailgate, especially while making food in camp or cleaning up. Nasty. One thing I didn't expect is that a bit more exhaust noise comes into the cabin now, given that there's no sound deadening under the cutting board any more. I like it, but down the road I might install a layer of Dynamat under the board to quiet it back down again. Maybe. In the meantime, I'm enjoying the ruckus of the Cummins back there.
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The bad: I had the motor's injection pump fail ON THE WAY HOME FROM FITTING NEW TIRES. I ended up buying a new (used) p1700 pump and a rebuild kit, so all is good now but man, I am getting tired of the used parts from this swap failing. Not sure yet what the cause of the failure was, but the donor truck had 180k miles on it, so maybe it was just old and tired. During the re-install of the rebuilt injection pump, I also went back to a stock fuel plate, replacing the #6 plate that was on the donor unit. The truck runs really, really smoothly now and while power and acceleration are down just a hair, I'm hoping the combination of injection pump, KO2s and the tune we put on it creeps my MPGs up toward the 20 mark. We'll see.
Fingers crossed for a future lack of drama...