I had to do this with a mustang throttle body and wound up ruining the TPS. Lucky for me I got a good used one for $25 online but DO NOT goober up your TPS, GO SLOW!
One thing I haven't seen mentioned here... If you do bugger up your screws and have to buy new hardware DO NOT GET THE SAME SCREWS! Get hex head screws with the same threads from a hardware store, this way if you ever have to remove the TPS again for cleaning/putting car back to stock/whatever you can just pop them right out with no fuss. Why Ford uses phillips screws and then makes them near impossible to remove I'll never know...
-00' Contour SVT #1245 of 2150. Trubendz Borla exhaust, BAT Catted Y, Spec shifter, Injen CAI, NPG Big Brakes, Modded Sunroof.
-98' Mustang GT. PI Engine, exhaust, Cobra front bumper/R hood, 3.73s, deep dish Bullitt rims, lowered, lots of other stuff.