I'm currenty looking for the best set of performance shocks that I can get at a reasonable price. I like the edelbrock, but I can't seem to find them to fit my car, I have a 2000 mercury grand marquis. When I search, the search finds shocks for GMs or CVs up to 97 and 98 and up police interceptors, what is the difference in the shocks between these years and models?? are the mounting points different on the PIs or something?? Any other shock suggestions? All help will be appreciated.