I'm anxiously awaiting what numbers your car put down too. I also have a 2.3 and switching to e85 with a 3.0/4lb lower and just installed midlength headers
I have twin GT pumps, Fore hat, -8 feed line, 80's, OE rails, Stage 2 FPDM, 10ga hot wired relays, an Aeromotive billet 10 micron filter, and a BA2400. At 16.6 psi and 19.5 degrees of timing my motor made 657 rwhp in ~72 degree air with the humidity at a low 49%......E85 is the shit dude!!! My only complaint is that on road trips I'm lucky to get 13 mpg...and I'm not really complaining The best thing about E85 is that the car seems to run almost the same number in heat or cool....doesn't seem to be affected much by higher ambient temps.