Well, finally got an update!
7. Approved bodies for 2007: SC430, FXX, Porsche Carrera GT, Supra, Any Skyline, 350Z, Integra, Any Mercedes, Audi, BMW, Opel DTM/ Touring car bodies. Pretty much everything except the NSX, Ferrari 430 and 360 bodies.
Apparently the Subaru B4 is GT1 only, so not on this list..
Among the rest, which are the best to race?
How much lighter are the "Lightweight" versions of these bodies?