I am curious as to wheather or not I may use the three motor mounts on small sixes to mount the big six in the same spot as I think the big six is a bigger block but maybe only the head is bigger it seems to me the blocks are the same and drilled the same to accept the same mounts in the same places on the frame ie. the front half moon mount is on the front of the frame and the small two bell housing mounts are the same so why not be able to use them interchangeably to mount either large or small sixes????? the blocks only differ in stroke not bore....