Most 78 had 350 engines , that is a plus,not sure how old you are but back than, the gm truck engines where painted that color, 78 was the last year to come with a 350,and not a lot of them . and the carb is a Q jet,again stock for that year,not after mrkt as you say.HEI dist came out in 74 .Haha lol! My gess is he was given it or ended up with it because of how he talks about it.
That motor is rigged.
-Half removen a/c
-Painted blue block-aint no ford!
-Computerized distributer with aftermarket carb, so it probably gets 8 mpg because it has no emissions with the computerized distributer
Dressed it up nice though!