motors that will fit my 87 ram 50 /standerd transs

A bolt in engine would be the same as what you have now. Probably the Mitsubishi 2.6 liter.

you should have a KM145 transmission, pretty much any engine from the 4G5 series will bolt up, as long as the block width is the same. a wide block is 13.25" from shaft to housing bolts, a narrow block is 12.25" from shaft to housing bolts.

The motors offered in these trucks are the 4G52 2.0L SOHC 8V, 4G53 2.4L SOHC 8V, 4G54 2.6L SOHC 8V, 4D55 2.3L SOHC 8V TD04 wastegated intercooled turbocharged, and the 6G72 3.0L V6. Engines that will bolt to a KM145 include: 4G51 1.9L SOHC 8V I4 4G52 2.0L SOHC 8V I4 4G53 2.4L SOHC 8V I4 4G54 2.6L SOHC 8V I4 4G55 2.3L SOHC 8V I4 4D55 2.3L SOHC 8V I4 4D55 2.3L SOHC 8V I4 TC05 Turbocharged 4D55 2.3L SOHC 8V I4 TD04 Turbocharged 4D56 2.5L SOHC 8V I4 4D56 2.5L SOHC 8V I4 Turbocharged 4D56 2.5L SOHC 8V I4 TD04 Turbocharged 4D56 2.5L SOHC 8V I4 TD04 Water Intercooled Turbocharged 4D56 2.5L SOHC 8V I4 TF035HL2 Turbocharged 4D56 2.5L SOHC 8V I4 Intercooled Turbocharged (first gen DI-D) 4D56 2.5L SOHC 8V I4 Intercooled Turbocharged (second gen DI-D) 4D56 2.5L SOHC 8V I4 Intercooled Turbocharged (third gen DI-D with variable geometry turbocharger)

You can find these engines in the 1978-1980 Plymouth Fire Arrow 1978-1983 Dodge Challenger/Mitsubishi Sapporo/Plymouth Sapporo 1978-1986 Mitsubishi Debonair 1979-198? Mitsubishi Canter FC 35[5] 1979-1989 Dodge Ram 50 1980-1987 Chrysler/Mitsubishi Sigma 1981-1985 Dodge Aries/Plymouth Reliant 1982-1985 Chrysler LeBaron 1982-1985 Chrysler Town and Country 1982-1991 Mitsubishi Pajero 1982-1983 Dodge 400 1982-1990 Mitsubishi Starion (turbocharger and Throttle-body fuel injection) 1983-1984 Chrysler E-Class 1983-1985 Chrysler New Yorker/Dodge 600 1984-1987 Dodge Caravan/Plymouth Voyager 1984-1986 Dodge Conquest/Plymouth Conquest (turbocharger and Throttle-body fuel injection) 1985 Plymouth Caravelle 1994-1996 Mitsubishi MJ Triton 1985-1996 Mitsubishi Magna (1985-1996 TM-TS series carburetor; 1987-1996 TP-TS series Throttle-body fuel injection) 1986-1989 Mazda B2600 1987-1989 Chrysler Conquest (turbocharger and Throttle-body fuel injection) 1987-1989 Dodge Raider 1987-1998 Jeep Sahra-Pars Khodro Iran 1991-1997 Mitsubishi Pajero China market version