Why not get a SVT Lightning, throw in a flip-chip, air injection kit, and a 4# lower blower pulley, and use it as a 12 sec tow vehicle (on stock F1's mind you) for your track only Stang.
With only those three mods, it makes a heck of a daily driver: able to do light towing, utilty of the bed, and able to wax LS1's while carrying some stacks of plywood
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1997 Thunderbird 4.6L: Dynomax cat-back, MN-12 perf. offroad downtubes and Y-pipe w/ Magnaflow resonator, 80mm MAF with cone filter, B&M trans cooler, Inject-Tech chip, MAC U/D pulleys, KVR front brake upgrade. 15.2 @ 91 before exhaust & pulleys. Not bad for a 3800lb auto 4.6L
No Longer own: 91 LX 5.0L 5 spd