Nice, and props on keeping the Y block. If you haven't done them yet, there are some oil gallery modifications you might want to do to make sure the cam and rockers get enough oil pressure. All you have to do is pull the rocker assemblies off and drill/tap a couple of holes.
http://yblockguy.com/yblock_009.htm
My dad raced a Y-block '56 Ford back in the early sixties. He said the top ends of the Y-blocks would get eaten up because of low oil pressure until people started doing this modification to them.