Well I fell into a SCREAMING deal on a R3 block today. Appears to be a very early block (prototype?). 59 degree, 4 bolt main, siamese bore, 318/340 intake, 10 head bolts. The only odd thing is it's a 9.200" deck.

What the heck am I supposed to do for an intake?!

It was so cheap though, I could afford to get a sheet metal intake made for it and still be ahead... lol