Someone needs to start re-casting 340 blocks
There's no shortage of 340 blocks out there. Granted, many of them are at least .030 over but you still see std bore ones for sale. Not to mention everyone that has horded them (myself included). At some point I will decide that I dont need to keep all these blocks.
I remember the MP "resto" blocks they sold a while back. I doubt too many bought them as they were kind of pricey for a mostly stock appearing block.