sounds about right to me. lower 60 foot time will help out, so get some stickier tires!!! pre 99 GTs have less HP than the 99+ GTs, so they will be faster. this is due to new heads, intake manifold, and reworked cams in the 99+ GTs. just noticed humidity was pretty high as well, so that didnt help any.
Ya thats gotta be 2.73's. I have 3.27's and like em pretty well. I think im gonna go with 3.73's. Just because I like being able to somewhat wind out the gears, its pretty fun. Your 14.7 is pretty damn good if you ask me. My 98 ran a 14.4, with just o/r H, cone filter and pulleys. I had a crappier 60' too. I know what you mean about third gear. At the track I seem to grind gears for some reason.