Find a balancer for a 1954 216. It has the narrow belt. The people who rave on about the supposed 216/235 balancer differences are a little hard to understand, with the seat of their pants covering their lips. Inline six engines are inherently balanced- - - -they could run without a damper at all and have few, if any issues.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!