Well as far as a Dodge Diesel Truck,I bought a 1978 W150,4spd stick,short bed style side with a Mitsubishi inline 6cyl diesel naturally aspirated engine, in 1984. Ran it until 1992 when I purchased my 1991.5 Dodge LE,Reg Cab, W350,SRW,CITD,Dana60 in the front,Dana 70 in the rear,3.54 gears,5spd manual shift trans. I still drive it everyday with 440,000 miles on it,it was the best investment I ever made. I put one transfer pump,3 water pumps and one starter on it in the 20 years I have owned it. I won't mention the normal service parts that need replacement over the years.
Then in Jan. of 2008 I bought a new left over 2007.5 Dodge 2500HD,SLT, Reg cab, 6.7CTD,6SPD manual shift trans,3.73 Gears,still in stock configuration as I have 5 months of warranty left on it. I purchased this Dodge Truck as being the last I will ever buy. I use it for long trips hauling hay and equipment and use my 1991.5 as my daily driver.