I can only answer one of those questions.

The 4D55 alternator has a built in vacuum pump there is no separate vacuum pump. It has enough vacuum to drive the brake booster.


Mitsu # 6 - 98 6G72 Montero Sport, Locking Rear Diff, Aisin Manual Hubs, 31x10.5

Mitsu # 7 - 02 6G74 Montero Limited