Ok so i run a 99 gt and have a automatic with overdrive. So when i hit 4th my accel pretty much dies compared to the lower gears, what kind of options do i have to get that 4th gear accel up?

Whats done: 01 bullit motor w/ bullit heads (3 angle valve job), diablo chip, CAI, UD pullies, TB and Plenum, MAC LT's w/bassani x-pipe and flowmaster 40's back, 4.10 gears, full length subframe connectors. (also just got new timing chain, waterpump, timing guide, upper and lower gaskets, and thermostat)