Good rebuildable units:
6139S (72 340 AT)
9009S (75 440)
9182S (78 400)
9342S (82 318)
$75 EA
Lesser quality cores that have correct numbers and matching
base/body/top, may need a common piece or two to rebuild, big bore
large CFM units:
6322S (73 440)
9046S (75 400)
9078S (77 440)
9103S (77 400HP)
9245S (?)small cfm
Top, body and #'s base:
6139S (72 340 AT)
6545S
9097S (76 400)
9182S (78 400)
9342S (82 318)
9388S (830318)
$25 EA