On my 94 bonneville I noticed a problem stopping it felt like it gave out for a second and then caught again. I filled it up with brake fluid and just sat in the car and stepped on the brakes a couple of times I then noticed the brake fluid had dropped and when I checked around the tires I found a puddle of brake fluid. Any ideas on what it could be (brake line, hose Etc.) also how hard of this project be for a do it yourselfer or should this be left to the pros? any idea on an estimated price???