I haven't done anything substantial to it. However, I did put a K&N filter in it and taller gears or whatever in the differential. Since I got to California about 5 years back, they really don't have much smog legal things I can do to it. I'm stuck with the Variable Venturi for now. I used to drive a LX with the 302 until I wrecked it and got this old dog. My brother still drives his 88 Grand Marquis however. I tried Pulstars and the other gimic plugs plus the Tornado thing to no avail. I got Eagle RSAs on the car now but they are getting harder to find in my size. Other than that, I frequent the junck yards for better parts a lot.