Chris- Your definatly shifting too high, I gain almost 1mph and .2 when shifting at 5500rpm instead of 6000. Your powerband should be almost identical to mine. You can get low 13's out of it no problem. It will come.
Skyler
------------------
-1989 Saleen Mustang #406- TFS Heads, E-303, edelbrock intake,70MM TB, 73mm MAF, off road H, headers and 3chamber flows.
12.55@107mph
50-175 Nitrous Works WET Kit just added.