Ron's statement about 200SEVEN E-Series is correct, but Ford made a huge change in 2008. In that year, they ENLARGED the Front Disc Brakes substantially, and used the same Axle and Brakes from E150 all the way through E450. Several of us have bought new components, removed by shops that convert E-Series to 4x4.
CarringB and Holiday27 got their parts from QuadVan in Oregon
j-d and Deprived got ours from Quigley. Mine came from PA, I think Quigley sent Deprived's from Texas.
Installing late model front brakes (buy the whole axles if your ball joints are wearing out) won't solve the rear brake issue, but it will give you WAY more stopping power from the front brakes, and far less fade.
I don't have a spec for brake temps. I know that if a caliper locks up, THAT brake is like walking up to a BBQ grill.
