measured it now - 9 1/4" between the heads from bolt center to bolt center -
You should also replace the gimbal bearing that with the new coupler should tighten it up nice. If you dont know how old the crosses are change them as
Bad stator does not cause slow cranking.----------How was the starter tested to be good ?
Only in 71 and 72 did the hydro-electric shift have yellow plugs.------So at this stage we do not know what you have.---------Your control may say "