The "Throw Away 318"

The 360s were around nearly as long as the 318s so there are acres of them out there, and so IMO, nearly every bit as "throw-away".
Not around here! 318s are everywhere 360s are difficult to come buy and 340s are extremely rare and expensive! I was fortunate enough to get two 360 blocks this year for spares. But had they been 318s id still bought them!