Crankshaft: How to tell if its forged?

[russ jerome]

http://hometown.aol.com/russjerome/pagehybridblock.html

Halfway down, pics and weight.

OK so today I looked at it, its got the plate. So im dealin with a non common block. After I get it together, I would like to be able to run at least a high 13 with this thing. Just how much hp am I gonna be lookin at in able to do this and what would be a good setup as far as the bottom end goes? If I use the block ive got now, non-cb, would I be smart to try to find a forged crank? Or would it be a better idea to get a cb and go with a cast one? I dont want it to fall apart the second time I go down the track. I think that would kill me. Any suggestions?
Thanks again.

Ooh yeah that link with the pics helps a bunch. Now ill be able to tell which is which. Thanks for the help