Can I hit the 11's? low 12's

The elevation is killer. Are you wanting to run an high 11/low 12 at 6000 DA?

The changes you made should result in a roughly two tenth reduction and 1.5-2.0 additional MPH. A 104 MPH trap speed is enough HP to run a mid 12 if you have the optimal torque converter, rear gear, and traction. You need to be shooting for mid to high 1.6x 60 foots.