I sleeve "worn out" 350 race engines back to standard diameter all the time. It's a bit pricey if you have to pay a machine shop to do all 8 sleeves, but I've got a boring bar, and the sleeves aren't that expensive. I've got 4 or 5 4-bolt main 350's that have been given to me by racing buddies, with either a little chip missing from the bottom of a cylinder where a rod let go, or they've been bored too big to rehab. It's fun, beating somebody with his own junk parts!
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!