Update.
Didn't by the T-bird - found an 89 LX convertible with an 88 turbocoupe swap motor in it. I know this car doesn't have as much power as the 99 Cobra I just traded in, but it seeems to get up and move pretty well at 10psi, and that turbo spooling sound is soo cool!
What is the rev limit on the 2.3L turbos? 5500RPMS? Car has a K&N filter on it, any other good cheap mods I should make?
I need to pull and check the plugs. How does one tell if the distributor rotor and plug wires should be replaced?