I bought my 6.0L from this guy last weekend and he has another one on Ebay motors:

Item # 7993123738

Real nice guy, and TAKES TRADES for things. I traded my 440 block from my Mopar for my 6.0L shortblock (partial trade) So I got my 6.0L for $150!!!!!!!! Block, crank, rods, Pistons, timing chain cover, crank pulley, timing chain and cam and oil pump for $150!!!! Or $299 outright. Just thought I would those know that this guy has a BUNCH of stuff...transmission, motor's, aluminum 6.0L, Diesel;s etc... No, I do not work for him, I just thought I got a smoking deal, and this guy is legit, and since he takes trades for stuff, should pass it along to you guys. He will sell a 6.0L shortblock outright for $299, and if you have some stuff to trade, like 5.3 stuff or whatever, he will work with you, great guy.