how much does a 420A block cost?

Has anybody picked up a 420A block from a junk yard? I'm looking for one to build for a turbo but be able to drive my car while i'm building the new one.

Just the block? Looking to start at about $400 possibly.

long block, short block, bare block? new, used?

^if long/short, what for internals?

check out www.conceptillusions.com (http://www.conceptillusions.com)
www.motors.ebay.com (http://www.motors.ebay.com)
www.dsmtrader.com (http://www.dsmtrader.com)
www.slowboyracing.com (http://www.slowboyracing.com)

Just to name a few... the vendors will have new/remanufactured blocks, ready to bolt on heads and go... (shortblocks)... Not cheap, but saves you the hassle