ARC,
Partial information will kill you. I think your research is a little thin. I could say that you're a fool not to have gotten the '85 Fourrunner with solid axles, springs-over leaf springs and the only year with those and fuel injection. But I won't, because I've only heard this was the best year from owners, and not actually owned one. Same thing with the '03-04 Ford 6.0L diesel. I know folks who have had NO trouble with theirs. I read where Ford surpassed the One Billion dollar mark in warranty replacements and buy backs for the 6.0L. I don't think I would buy one, but not because of hearsay.
Yes, there have been some VP-44 failures, but mostly due to the lift pump going out, which sucks down the inj. pump. I've replaced the factory lift pump as it only went 100,000 miles as a precautionary measure, replacing it with an aftermarket lift pump down on the frame rail where it belongs. It's now a pusher instead or a sucker, with less back pressure, and away from the heat and vibration of the engine.
Who,....who would pay $4000 for an injector pump? Run away. There are some slick aftermarket injector pumps that may cost as much as $1800 (last time I checked) but give better performance and mileage from that 1020 lb. boat anchor. I keep waiting for mine to go south so I can upgrade, but alas, after 9 years, no such luck.
Maybe I've just been lucky and dodged (pun) the bullet all along.
I think you missed the whole point anyway. All-in-all, i think it's the best compromise of power and mileage, with, I'll grant you, a few niggling woes that are easily and cheaply fixed. There is one thing I don't like about the '01-02's H.O. motors: the noise! These are the noisiest years of the cummins, when they were still using metal injector parts instead of plastic, giving that, I hate to say, 'Characteristic' clack.
Having said that, I'm really not badge bound, and find good in all the big three offerings. I just bought what i thought was a good in-line 6 Cummins with an o.k. truck attached.
regards, as always, jefe