What kind of E.T should i expect?

I watched one Sunday click off mid to high twelves in near 100 degree heat. It has about the same mods you listed.

On kc-mustangs.com
sat. at the vamp race. middle of the day, best pass ever.

12.68@106.6 1.74 60'

sunday

12.73@106.2 1.68 60'
12.79@105.8 1.76 60'
12.76@105.4 1.74 60'

mods= jlt cold air, upr x-pipe, dyno max ultra flow mufflers, 4.10 gears, hurst shifter, excal. 2 programmer. BMR lower control arms. mickey E.T streets.

It also depends on how well you know how to use the 4.10s you have. I've seen people in the mid 14s with 05+ Mustang GT, just because they lacked experience and/or couldn't launch very well.

I'd say if you personally can pull sub 2.0 60' times you could break 12s, otherwise low 13s. I see you have DRs so you should be good on the 60' times