I'm not trying to get to any number, but trying to get the car timed/tuned the best i can so it can run what it can. You may be dead on at mid 15's, it's what the factory 360 Duster's ran (all over the 15's, depending who tested), and I'm pretty sure they probably had 3.21 - 3.55's. I'm just now starting to test/tweek. Motor has been in the car but sat for close to a year while I did some work to the dash here and there. Now I'm working with it, seeing what it likes, and I hope to make a trip down the strip in 2-3 weeks.