How do you know which boot to get. Car does not have one now. With clips or the one that slides under the chrome? here is the links 1.http://www.1aauto.com/1A/ConvertibleTopBoots/Buick/Skylark/1ACVB00029/143681 2.http://www.1aauto.com/1A/ConvertibleTopBoots/Buick/Skylark/1ACVB00030/143694