Bought a 2007 SR5 a couple weeks ago. Started tackling some of the more involved tasks on it today. Cleaned up the trailer hitch and skid plate. Hit them with a wire brush and then the POR-15 3 step with black. Top coated them with 3M undercoat. First time I have used either products. Glad I read up on POR-15 preparation, surface prep is everything. Hopefully this will hold up a couple years to Minnesota winters. Sorry I don't have a finished product pic of the hitch with the 3M undercoat yet.