harmonic balancer
Doug Fisher International vibration dampers is your best bet.
Part Time Speed Shop
4400 Hwy. 25 - map it
Montevallo, AL 35115 USA
phone: 205-665-1045
Dutton Performance Engines
763 Old Sulphur Springs Rd. - map it
Wellington, AL 36279 USA
phone: 256-820-0706
fax: 256-820-0706
eMail: Contact this Company
Fast Auto Parts Co., Inc.
637 Bell Street - map it
Montgomery, AL 36104
phone: 334-263-2681
fax: 334-264-5494
contact: Henry C. McCown Jr.
Cheers
Red '58 Mercury M-100 w/ 223 I-6 w/ Merc-O-Matic
Colonel Sir Harry Flashman VC
It will fit fine and is a 3 groove balancer just like the 78.
I don't know why, but no one lists the older balancers even though they are all internal balance and never changed balancers until they went to a serpentine pulley balancer



