Adding Toyota Navi HU to 3rd Gen?

[coinball]

After some searching, I still haven't found any cases of someone installing a Toyota Navi HU, such as the E7001-E7007 HU's, into a 3rd Gen. I'd like to put in a stock Toyota Navi HU (I like things that look factory), if it is indeed possible to wire up one of the E700x HU's into my 3rd Gen.

Please advise if anyone happens to know the specifics around using one of those HU's in a 3rd Gen.