I really appreciate all your input. I added a few more pics of the areas you've suggested. The cab mounts, motor mounts and the bracket and shaft of the pedals connect to. I wiggled the clutch and brake armatures and there is not a enough play to make up the difference. I'm leaning toward the motor mounts. One person I talked with suggested I jackup the motor and see if that does correct it and that might suppport the motor mount theory. Again thanks for your help...this forum is great.

Same link: http://picasaweb.google.com/erik.zollinger/Early1947GMC12TonLongBed#