The "Park" position in later domestic transmissions is not meant to take the place of a parking brake. The parking pawl does slip, and often will skip causing the car to leave its parking place unattended. As a veteran Imperial driver, I am highly use to curbing my front tires when parked on a hill, and yes, I have been known to carry a chock in the trunk for emergencies. This applies to all the cars that I drive. I have also had the unfortunate experience of having a car "lock" in park as a result of being bumped while it was parked. This is one thing that our older Imperials will not do. Paul In a message dated 4/24/2004 1:00:04 AM Eastern Daylight Time, Overland14 writes: > The safety issue alone (park in the transmission and good rear wheel >emergency brakes) is not to be out done by the driveability.....ever get out >of your car and forget to use the emergency brake?....I will admit it and am >concerned that it might happen again....I live in a hilly area and would like >the best chance possible that my car will stay where I park it....so this >conversion will double my chances without carrying blocks for my >wheels.....and I will not have to worry about the car rolling over or hitting >someone....(lawyers have make me think that way ).....I will let you all know >how well it > works when I am back on the road later this year.