Looking for a donor motor for my 69 Coronet. I found a 78 Dodge truck with a strong 440/727 and Dana 60 rear with 3:55 gears. I know the motor will drop in, but what about the trans and rearend? Probably a dumb question..but one I don't know the answer too...
Dave

Trans should as long as it's not a short tail or 4x4. The rear would probably need narowed.

Narrow the rear and make it 5 lug of course, and don't forget you'll need a car oil pan for the engine too.

What ton is the truck?

If it's a half ton, then the trans will work, but the "dana" will be a 9.25 mopar not a dana 60

If it's a 3/4 ton the 727 will likely be a short shaft version, and the d 60 will need to have flange ends welded on, axles etc..

If it's a dually, the 727 is as above. The dana will probably be a d70, not a d 60, and not worth narrowing.

Truck is a 3/4 ton. Claims to be rust free and in great shape, but I don't need a truck, just a motor to put the Coronet back in action. Not sure there is much of a market for 3/4 ton truck parts around here.

Nice boxes are usually easy to sell.

Guys who restore LRTs seem to appreciate mint '78 grilles/radiator supports/front clips. Every time I take that stuff to the Mopar Nationals, it sells quickly.