i think the reason the aftermarket for this car is so small, is because it costs large amounts of money to achive very minimal gains... and people who buy $15k to $23k cars don't have large amounts of money, let alone large amounts of money to spend on small gains. plus with the way the obdII is, this car was just not made to be modded. roush did the best they could, and without seriously comprimising reliablity, modding this car is more trouble then it is worth... i am sure your shop will see that, and probably back out of the contour aftermarket... plus on top of that, the car has been killed.
