mid 9's for a street/strip engine.
if you're good you can do 10-10.5. you're not that good

 

Id go with anything from 8.5-10.0 just whatever you can find cheap works also

 

Imo something around 9:1 would be perfect for an dd boosted car on stock sleeves. I am currently running 10 . No boost guage but i think i should be pushing 6-8 psi . Feels really good but i see some thing in the range of 8:9- 9 in my near future before i turn it up to 12 psi. Hope this helps