i'd say your safe! funny you mention pulling.....my 71 f100 sitting all winter, sank a bit in the gravel drive. couldent believe buck snort my ih cc 71 had when she pulled the front wheels 3 inches with the ih 42 inch push blade up front! pulled old blue like a willys in 4wd.! just set your block ahead of front wheels the distance you need travel....truck wont go past block if your on a grade.
