I would think the 4.56 is fine but out of the two you mentioned I would advise the 4.88s. I think f you get your 60ft down to the low 1.5s/high 1.4s you will be knocking on that 10 second door. You have the power to run in the 10s just need to hook and launch a bit better. Are you powershifting?
Matthew 26:52-54 / Go Pack Go!
1987 Mustang GT Hatchback - 2V Mod Swap In The Works
1997 Lincoln Town Car, PI Intake/Cams, Sofa-On-Wheels, "Fat Tony" we call it
2001 GT Convertible - D1SC / Geared / Cammed / 440wh 400wt - TOTALED 2/2019