Maximum compression ratio in a screw blown billet hemi

Not sure I can even get there with my veney alcohol heads - but curious as to what you can get away with on maximum compression ratio! I run 11.7 - my car has been a best of 3.69 200mph in the 1/8th.
I think more is better but there is always an end all. Let me know text 316-761-7208 or email kbhemi@cox.net or post here if you want that info all over the internet! Wayne Roberts