There is a special tool for installing the moulding. The mid 80's Chevy Trucks used a similar moulding. Check with your local glass co's, or even better find the nearest Tool truck, such as Snap-on , or Matco , they sell this tool. Try not to use any Silicone, as it will make it slick and as easy to pop out as installing it. Hope this helps. Good luck,
David G.