Change your Hypertech to a Jet, and p&p your manifolds first. Then see where you are.
My car Gtech'ed at 60° with a 14.7, which I feel is a bit optomistic.
At Woodburn last friday, I pulled a 15.5 in full street trim, over 1/2 a tank of gas, and with track temps over 100° with no ice for the SC. I think a 14.9 in ideal conditions is achievable.
The only physical difference that might make a slight difference between our cars is that you don't have the full-roller valvetrain on your 92, and that'* not much of a difference.