I have a '93 GT that has around 110,000 miles. It is stock as far as I know. Just recently I noticed and intermittent missing feel while cruising at 60MPH. I also get the same feeling when hard on gas after 3500RPM. Any feedback as to possible problems and ways to verify problem would be greatly appreciated.

Have you done all the normal tune up stuff? I would change the plugs, wires, and cap and button.