I have never actually gotten my hands into the insides of one so I'm not incredibly familiar with the engine, but other than the fact that they are V block engines; why do you consider them junk? I like the fact that they have a very simple injection system and are very easy to crack open for repairs. Do they have some hidden problems I just never noticed when hanging around my Buddie's custom shop? FYI all of the drive trains used on the Central American buses are bought new and installed into beefed up and customized frames and bodies (i.e. 360 5 speed trannys, BIG Borg/Warner 2 speed rear ends, 8 ton springs, Air brakes, etc), so they are not junk when they are put in initially. If they were to be used as they are when they arrive from the US they wouldn't last one week on those roads.

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Manure green 2005 CRD sport4x4, GDE Hot tune, Cat Gut, OE skids, Draw tight hitch, Duramax lift pump, 160K on multiple varieties of fuel, XM radio, Escort live with Redline, fog light mod, GPS, Icom IC7000 all band radio call sign KC9QPF, Grabber AT2s on Soft 8s, FIA grill blanket.

They do not have liners for one. They are also smoke generators. Reminded me of a Mack dump. They had injection pump problems(lifespan). They were hard to work on, loud and underpowered, especially the na ones. Basically, one of Cat's crappier engines.
They also happened to be in every piece of crap L8000 Ford dump I ever worked on. Basically, one of the worst dumps ever built. Put those together and you get bad memories. I'm glad they're gone.

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2005 sport crd-SOLD No regrets