if your up for the grin factor now having experienced a true seat-fo-your-pants feel, i would build the 400 i brought to you. deck the block, get 87 cc heads, forged pistons and a 1/8" longer stroked crank. this should get you in a good range for power without hurting the wallet. there are a few cars here locally that run dam near 11.0 to one and they do so on low octane fuel. its the quench factor that allows them to do it. granted they are chevy's but the principles are the same!
also decking is used for more than just cooling factors. read a bit more on this befor you cut an original block. or do as i suggest and use the 400 you picked up through me.
Andy
due to budget cutbacks, the light at the end of the tunnel has been disconnected for non payment.