Yes, Superchips would definitely be the way to go. We sell them at work and have had great feedback.
Your Grandpa and my Grandma would make a very cool couple! She's a major gear head!
Good luck!
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Nicolle Douglas
Girls Can Too, Editor
The Mustang Works Magazine
1993 Mustang GT - Supercharged K.C. 306
483.6 rwhp / 472.1 torque @ 7 psi