I run Marathon seat covers under my sling. Front seat also for that matter. I've been very happy with them.
To remove dog hair I occasionally open all the doors and used compressed air and a blow gun to get the hair out. Works pretty well and pretty fast. I have a buddy that uses a leaf...
Just a guess but was the rack still in really good shape like not corroded at all? Was the metal of the rack directly touching the metal of the roof maybe where paint had worn off? Factory racks have a rubber or plastic spacer and I'm sure factory bolts are chosen specifically to avoid a...
It replaced my wife's Gen 1 Sequoia. It fit a dog crate and two large "Tupperware" behind the rear seat, did not have TSS and was a toyota body on frame.
I don't have pics but...you might consider incorporating a water tank for the dogs in your build. Either drinking or wash, depending on your needs. I've been thinking about incorporating a water tank for my dogs in my Tundra for years.
Do a search in the Tundra forums. These guys have been dealing with the TSS issues for a couple of years. Thankfully I have a 2016 Tundra and 2019 4 Runner. No TSS in my driveway.