Mark, The piece in the trunk covering the tail lghts is indeed either polypropylene, polyethylene or some other close cousin, that cannot be glued. You can tell because it has a sort of waxy texture when it is cleaned. Mine was cracked down the area of the screw holes and I held it in place by putting large fender washers under the screws and carefully pulled it together before I tightened the screws. It looked satisfactory and stayed in place until I found a replacement. Roy 6 Crown FDHT In a message dated 5/26/2003 1:22:20 PM Pacific Daylight Time, tomswift@xxxxxxxxxxxxx writes: << Hey folks, It's time to play Stump the Panel. I am thinking of ordering a Plastifix plastic repair kit from Eastwood Co., and it says in the write up that it is only good on certain plastics. It will not work on polypropylene or polyethylene. I am going to use it on the following: 1. Seat molding on my '68 (plastic part that wraps around side of bottom cushion is cracked at the front edge) 2. taillight covering in trunk (a softer plastic-- covers the holes for the taillight bulbs in the the trunk-- it has cracks in it) 3. hard plastic trim for A pillar in '70 NYer I don't think any of these parts are polypropylene or polyethylene, but how do I tell? Thanks, Mark >>