I've got a 261 stashed away in storage, waiting for me to find the time to do the "Cadillac Stroker" job that brings it up close to 300 cubic inches. I've figured out a way to use the original 261 pistons with a little machining done to the tops of them, rather than search for those scarce and pricey Cadillac pistons. It won't produce the power of a beaned-up 292, but it can be quite a "sleeper" especially if it's disguised to resemble a 216.
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!