ok, so they called me after they did the Tstat and 'ECT' (sorry I said ECV last time), and "oh the waterpump does need replacement too." but apparently the previously installed parts were neccissary too.
here are the part numbers off of my reciept:
FMC F5AZ 12A648 AB - sensor asy-eng elec - $28.76
FMC F5RZ 8575 B - thermostat asy. - $17.00
FMC F1VY 8255 A - Seal-48.5x3.63 "o"ring - $3.00
FMC VC 4 A - antifreeze radiator - $9.90
FMC XS2Z 8501 CD - pump asy-water - $115.30
parts total- $173.96
labor total- $490.00
seems like they really screwed me, If I was at home I would have attempted to fix it myself, but I was out of town and had to make it home for the holiday...worst part is the heater still doesn't work
.