Just a note here on FE and FT (330MD/330HD -361 -391) engines. The engine in this truck is a FT 330 MD (Medium Duty).
There was also a 330HD which came assembled with a steel crank (same as 361 - FE 352/360/361 EDSEL stroke).
These are the later cast blocks with strengthened main webbing and the HD engines came through with steel crankshafts. The upper end (heads-intake-front cover) are not useable but later FE parts are easily adapted.
A STD 332 FE is 4.0 bore 3.30 stroke – A STD 330FT is 3.875 bore 3.50 stroke
This is one heck of a deal on that truck. Wish I were closer...