Let me see you baddest Eddy headed small blocks..

If you want to run low 10s, high 9s with a street motor NA you'll need more head for sure. With a lower pump gas friendly compression ratio I'd look into building more cubes and as Brian said the Indy heads. The 4.25 or 4.125 stroke cranks are probably going to be your best bet. Otherwise some sort of forced induction will get you there with the Eddy head, either turbo's or a blower and probably be cheaper and easier on the block as well.