I ran this a long time ago. This is a 97-98 Montero MAF (MD334011) that looks like a typical 3G MAS but with a plastic screen instead of the metal flimsy honeycomb version. Of course, the airhorn can be pop off and added to a 482/399 one if you like.
If I recall, the 4G Eclipse GT rear rotors are 284mm and vented. Also, the Diamante Wagon comes with 284mm rear disc but i'm not sure if they are discontinue.