Hello Jimmy. I'm a little confused on the bell mount issue (truck newbie). I did have another 65 D100 years ago that I never got running & I bought a 727 crossmember from a 66 in a JY that bolted in that 65 perfectly & if going with that then the stick bell mounts are unused. I'd like to go BB with one of the "262" monstrous cast iron bells/172 tooth flywheel & a granny 3 or 4 speed but I understand they are rare/pricey. Was curious about the later SB side of the block mtr mounts as I have a set if I have to settle for SB/727 for now. I do have a set of the 65 BB block mtr mounts & there's a 262 bell on ebay for an arm & a leg & that leaves the trans. too many gaps in my knowledge here. EDIT how hard are those 172T 'wheels to come by?