I JUST bought a set of these conversion heads from Eric at StageV came with rocker, shaft and stands, No valves or springs. Total package was $3990.00 SO YES these Heads ARE available!!!! SUPER Product!! And it doesnt take a BUNCH of machine work to the block. Most can be done at home with hand tools!! AND ONE MORE THING you can use stock A B or C body motor mounts, You have to grind the front 2 bosses off the block on the drivers and use the top back bolt boss, cut the motor mount as it interfers with the header pipe and weld a strap to the lower section of the motor mount that will bolt to the oilpump for the lower motor mount to hold firm in place, Hope this helps clear things up!!!!