12's with good driving???? I am not so sure anymore.

I have no idea with this setup. I keep hearing different things from different people. I think it should run a low 13 for sure, but are 12's a option or not?
Keep in mind that I retain AC and PS. No weight reduction and its a convertible.
Heres the mods.

93 mustang gt vert 11:1 comp.
351w Crate engime -- Edelbrock Torker II --
Trick Flow Twisted Wedge Heads -- FRPP F303 Camshaft
Aluminum D/S -- Centerforce Clutch -- Flowmasters
Shorty headers -- Offroad Hpipe --3:55's
MSD 6AL - MSD dizzy - Accel Wires - Holley 750 DP
CGS subframe connectors -- Holley Blue FP --
Trick Flow pushrods -- Hurst shifter -- Holley Blue FP