the 700, 750 and 1000f are all the same, the 4/500 isn't.
I actually got in touch with a guy with a vf1000 engine, I fancy it then the bike may live up to its reputation.
What have you done on the engine so far? I would be inclined to sort the engine you got, it won't cost anything to see if it runs.
btw your pics aren't working.
1984 Honda CBX 750 FE
1985 Honda VF 750 F
1987 Honda CBR 1000 F
1988 Honda CB 350 SG