question about 77 chevy's

[68GMC454]

thanks will let you know if i get it, as much as i liek it, right now i got 4 70's model trucks to look at, one is a swb 4x4, that i need like another hole in my head, so its all up in the air, but i know this old taurus is gone the day i get her somethign else to drive..... rust wise the 74 is the better of the 2, but im a BB type of guy.. screw mpg,,lol.......