Switching from E85 to 98 Ron +50% water/meth mixture.

[benstian]

Hi,
The E85 pump are removed from my area, and I want to go for 98 pump + 50/50 Water/meth.
I am currently running 680 whp (Dynapack) in my 2.3l Evo 2 with E85.
What size jets should I go for?
I read one place that it is recommended 1,5cc pr hp if I understood correctly?
I believe my crank hp are about 750-800 hp, so this should be about 1200cc of water/meth total? (800 x 1,5 = 1200)
Will my power output be about the same as E85 when tuned correctly?

Thanks