How to i.d. big block K-member ?

if you have bigblock mounts see if a 383 ,400 or 440 block will bolt up to it. I dont think they had k member casting numbers but you may look for a part # and see. then research the part #and pray its not the 67 as it had the funky front of engine block style mount.dont know if you can interchange this mount with the 68s and 69s,if not you will need a block with the mounting bolt in front of block for the 67 mount. easier just to buy aftermarket mount kits for the money as all k frames from the slant 6 to the hemi are of equal strength. cheaper to just use what you have and schumacker mounts.