That 80 over block would be a good candidate for six sleeves and a set of STD. bore pistons. I used to do that with "junk" racing blocks my competitors were throwing away. Eventually they figured out they were getting beat with their own discards! My students needed blocks to practice machining on, and the guys who sponsored my race engine building program appreciated the chance to get a race-prepared block at a bargain price!
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!