Personally, I do not feel safe going over 10psi/650 whp on 93. There are people who have done it but, I do not recommend it. You risk detonation and knock which will not make your engine very happy. You are a bad tank of gas away from engine damage.
If you want to push the 700-800 hp range we recommend a FORE innovations fuel system, if you need help selecting one or have any questions please give us a call