My new door sills from Dennis Bickford arrived a bit ago.  Video says more about them than I can.  Seem to be great quality but missing one row of studs on the back.  Won't be able to fit them until next Thursday.  I'll update this once they are installed and see how they work out. Cost $475 he pays shipping to lower 48, and split it with me.  Dennis Bickford 575 443-1160  He has a small 33 page catalog of parts for Town and Country's but lots of stuff cross over to non T&C.