Are the SVO and Dart 351w blocks worth the money?

[Technishawn]

I'm interested in building a stroked 351w for a Cobra Replica. The word on the stree is that the junk yard blocks are only good for a .030 over bore, aside from that the pre 75 blocks are usually harder to find in a standard bore size. The Dart Block looks like a winner but for 2 grand you could take the 69 to 75 351w, take it to .030 over, get a new forged crank, H beam rods, Forged pistions and a Main Girdle for the price of just a Dart Block. My Goals are to have a 500hp stroker that I can run on pump gas.
Any help would be appreciated.

thanks Shawn.