I use to get most of my parts from LMC. About 18 months ago I ordered a vent window seal kit and a window channel kit both at a cost of around $145.00 plus shipping. The rivot holes for the vent kit did not line up with the holes in the old rubber, but I had to install them anyway, because you could not know that untill you took out the old stuff and tried to put in the new rubber. I tried to use the holes in the new rubber, but it would not work. I tried to put new holes in, but they were so close to the other holes that it still did not fit properly. I had to use it anyway, or have no rubber at all. The vent windows now are worse than before since it is very hard to close them without a LOT of pressure. Now they are stuck and do not open easily. As for the widow channel kit, the anti-rattle strip with the felt stuff on it rusted within 1 month of installation and my truck is not parked in the weather, it stays under a carport. I wrote a letter and sent some old vent rubber to LMC to show them that the holes did not line up. About 5 months later and a few phone calls, I got a $20.00 gift certificate and my original old rubber back, still taped to the same piece of paper insde the same envelope that I sent it in. , but I was told that it had been in the "research department" for evaluation so that the prpblem could be fixed. The letter also said that they would not replace my vwnt window kit because it would not do any good since it would not fit anyway. All the rubber from both kits have developed cracks now after only 18 months. I really thought that after years of buying from these people and several hundred dolars spent, that I would have gotten a little better treatment from these folks. I never got a letter from the research department to acknowledge the problem, and they still sale the same kits. It may fit other sixtys models but it did not fit my 65 custom C 10.