Here is some interesting info on LS Blocks.
http://www.ls1tech.com/forums/showth...5&page=1&pp=20
The way it is going one should be able to get a stuffed LS1/Ls2 block for almost nothing from a wrecker and sleeve to 427.
Wonder if the cost of sleeving these things will come down.
Interesting that the LS2 and LS7 blocks are the same except for the sleeves.