Actually, stroking the 216 isn't an option because of the spray-oiling system. The other mods would definitely apply. 235's and 261's become 266 and 300 cubic inch engines, respectively, with the grasscutter stroker crank. A 224 cubic inch "216" with 40+ PSI of oil pressure and replaceable rod bearings from a Perkins Diesel engine might persuade a few folks who prefer to run a stock-appearing engine not to make that old 216 a boat anchor, however!
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!