Someone needs to start re-casting 340 blocks
Just mill one out of a block of 2024-T3. A 3-0 by 4-0 billet is only $20k. Another $20k in machining, bushing, sleeving and etc. should do it.
JK, of course ;-)
Joining the chorus here... Love the revs, buy a used R3 cup-car motor and find all the crazy parts needed to actually get it right. Better yet, swap in a 5.7 Magnum for cheap. Better in so many ways than the LA, without needing everything I put into my 340.