The problem I've heard about just recently was that all truck and van manufactures in their 150 and 250(1500,2500) series all have the same clutchs and transmissions. There are kits available but ordered ahead of time at time of sale is usually not the case.
The Ram clutch now is failing at 35K, Chronically!!!
i've had good luck with econolines over the years, which is why i bought one new 5 years ago.
two weeks ago, the alternator went south. new one was $600 installed. mileage is at 80k
blown diode half waving it seemed. it's a pain to get so, so i just had it done.
there is a $1 gasket that goes out every 40k miles on the 6 liter single turbo diesel.
about $175 in labor to replace... the second one started leaking a week ago, on schedule.
that's been it, since new. oil changes every 5k miles. trans fluid every 25k. coolant every 50k
running banks processor, adjustable to +100 hp and +150 ft/lbs torque. always set to max.

mileage is 13 around town, 23-24 on highway, weight is 10,500 lbs.
i'd a gone with a walk in service bed, but the mileage is much lower, and my wife said... you want
to park *what* in front of the house? mine's nondescript white, and operates in stealth mode.
as for rattles, it's pretty quiet going down the road, i dynamatted everything, walls floor, and ceiling,
and i have a stereo with 1600 watts, and enough rock and roll on the ipod that rattle aren't a problem.