While your replacing the clutch that would be a good time to replace the motor and trans mounts with something a little stiffer, make sure you replace the pilot and throw out bearing while your in there.
Find yourself an 8.8 from a 99-04 GT, have it geared to 3.73 or 4.10 and ad some tubular control arms and a rear sway bar and it will feel like a completely different car!
04 3.9l Convertible- Daily driver
94 5.0l Convertible- Work in progress
92 5.0l Hatchback- Another work in progress