I Have A Block That I Bought And Had Machined For A Spare. It's A 78 4 Bolt Main That Has Been Boiled, Magnafluxed, Decked, Align Bored, Bored .030 With Torque Plates. It's A Rough Bore That Needs To Be Finished Honed To Match Your Pistons. If Your In The Bay Area You Will Know The Machine Shop Where Work Was Done (very Good Work).
-550 Firm
Also Have Other Parts (stock Cranks And Rods, Pistons, Heads, Etc.)
Located In Napa, Cal.