hello im new here and my first time. my question is is there a difference between 460 car and light truck (f-100 to 350) engines and 460s found in larger heavy duty trucks. particualrythe crank or block where the pilot bushing fits in the end of the crank. if there is a difference, will the heavy duty crank fit in the car block. thanks for the help. im semi retired and worked as a mechanic all my life, but specialized in gm mostly.