10 sec. fox block options??

Dart,SVO, and now World Products are making blocks.The 351W is also a stronger block from the factory,as pointed out by Joe.The 460 BB can also be a good option for a cheap race car looking for low et's but not much else (other that big smokey burn outs :D ).
 
Ok, I don't think I would want to go with a 351 or big block because of the weight it would put up front. Out of the 302 based blocks....which would be the cheaper route? The DSS block would be perfect, but I don't trust a stock block at all with 500+HP.

What about the Mexican or early 302 blocks?