I put them in my 51 Panel. Made in USA and specific to your truck with foolproof directions. Not the cheapest, but I'm done with cheap-o Chinese and Mexican stuff. As with any kit, make sure your glass is fits correctly in the channels before you start. If using newly cut or repro glass that is tight fitting.... liberally shoot silicone spray down the channels and work them up and down by hand. THey'll start sliding real nice for you.
