Thanks guys, yeah, its the Steam Version I have. If I verify the game cache and that gets me back to default vehicles will I need to reinstall LSPDFR?
@0taku - Point taken my friend, I know I should have backed everything up prior to changing things, I wish I had. I always did with LCPDFR and GTAIV, but this time I neglected to do so. My bad. Lesson learned.