444xt Cummins First post, the good, bad, and ugly of a 444xt Cummins.

Hello all. This is my first post, though I've been lurking for a few months. I farm and also haul manure for a custom manure applicator(both liquid in tanks and pen pack and litter in end dumps) here in Central Ohio. I'm looking at a `90 T800 with a 444xt Cummins in it. I've heard that they had their fair share of issues and problems. Engine was overhauled 75000 ago, but don't know total miles on it. Is it a good engine? Can it be turned up to say 475 horse with no ill effects? It'd mostly be used for short 5-20 mile hauls loaded, with possibly a few 100 mile trips. Mostly flat ground, won't need the power all the time, just would be nice to get up to speed on the big roads. I'm familiar with the Formula 350's and DD 60 Series and have gad good luck with both engines in the applications I'm using them for. The truck the 444 is in is sharp and fits what I need for a decent price. Thanks in advance.
Also the ad says the truck had 34K rears. Is that right? I've never seen 34's in a tandem, I think he might mean 38's. Just trying to get some questions answered before i call about it and posssibly waste a trip to Western Indiana to look at it.

 

I realize the truck is 20 years old, but I don't need anything fancy. I'm looking for something reliable with a mechanical big block engine and is long enough to bridge with a 34' dump trailer and has tall rubber. I haul on some nasty lanes pulling a dump bucket and tanker so the tall rubber is a must for clearance. Most of the newer trucks that are in my price range are too short with small block electronic engines and small rubber. Just my personal perferences/needs.
Thanks for the advice on the 444. I've been too busy to make a phone call the past couple days, but plan on calling seller by the end of the week. I know there is a guy an hour away from me that can really make a Cummins scream but haven't been up that way to talk to him since last fall.

 

http://www.truckpaper.com/listingsdetail/detail.aspx?OHID=2288300
Here's a link to the truck. It's a sharp, clean truck. Priced a little high for it's age, but I'm sure it's negotiable.