I bought a power brake kit from Ground Up for my 66 with drums. Car has been in the shop for over two weeks trying to get this kit on. I have had to order a second booster because the first has a vacuum leak. The booster also seems to not want to fit this car. My mechanic has had to drill out the mounting holes and reposition rods, ect. It seems like much more of a PITA that it is worth. Anybody else experience these problems?