I like the "Sneaky Pete" modifications- - - - -The buzzword at a lot of dirt tracks where I ran was "Stock Appearing"- - - - -run whatever you can get away with, but make it look stock. Some oldtime tracks called that the "sportsman" class. Others just called it "cheating"! I like to stuff an extra 30 cubic inches or so into an original-looking engine. How about a 300 cubic inch "261" stovebolt engine with altered ratio rocker arms and hydraulic roller valve lifters? With a little dedicated tinkering, it can be made to look like a 216 at first glance.
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!