Help Selecting Harness Bar for 86 Carrera

Any suggestions on selecting a 911 harness bar vendor/source? I want one which is easy/quick to remove as my kids like to ride in the back seats when we are not at the track. I have seen some that have saftey pins on the ends which can be released for removal. Thanks in advance.
britt

See the short discussion in the post "harness bar and seat belts" about 20 posts below this one.