You can use a master from another Mitsubishi like a Montero etc or Ford Raider. Do a visual comparison first (mounting bolt width, brake line location etc). I swapped my Gen 1 master cylinder and brake booster with parts from a Gen 3 2.8 TD truck and a Pajero (Aust market Monty). I had to bend the hard lines to re-route them and drill 2 holes through the firewall as the booster bottom bolt holes didn't line up, but at first glance you wouldn't even know.