440 78 truck???

You can tell if the motor is a 440 by looking at the hand stamped data pad that is a small flat area just in front of the intake and towards the drivers side. Here are two pictures of my 440's data plate in my 83, 2WD Ram Charger, (the motor and 727 trans came from a 77 motorhome with 47,000 miles). The one picture was taken for the steering pump mount points but you can see the plate in the upper right.
For $500, I would snatch that truck right up! I spent an entire afternoon in a pull-yard today and not a single truck had a big block. There were a few 360's, but almost all were 318's or slant-6.
My data plate read as follows in two lines. Line one was 6T440TE, and second line was 12 3. This translates into the following;
6= 1976
T= Trenton plant
440= engine size
T= Truck
E= cast crank
12= December
3= day of month (Dec 3, 1976 engine was assembled)

I got the casting numbers of the passenger side, bottom of the block. It had three lines that read as follows;
9 25 75= Sept 25, 1975 (date the block was cast)
4006630-440-7= casting sequence number and eng size
DN= day or night shift
There was also a clock face which would tell you during what time of which shift the block was cast, pretty neat huh?! But there was too much gunk for me to read it. I've only had the truck less than a week so I have lots of cleaning to do.
Hope this helps some.