Aneama, I also owned a 5 speed, two door 1986 Mits Montero years ago...I use to pound on that little 4 wheel drive 4 banger constantly....Stock form it was absolutely gutless. I had to install headers, full exhaust, performance carb, raised it, installed mudder tires, and other performance mods thoughout to get it performing up to snuff.....A decent and peppy light weight offroad vehicle when I was done with it.....A Very reliable truck from what I remember...I drove and beat on it for over a year and did not have one problem with it.....I would off road that Mits, slam, bounce and bottom out regularly on hard dirt mountains, etc..and just work that truck trying to break it....It really never broke on me once to my suprise.....On the other hand my 1974 FJ40 Toyota landcruiser that was really built up for off road use to break on me all the time..Busted spindles, axles, twisted gearing, etc...But that FJ40 landcruiser of mine was equiped with a very potent and torquey 283ci V8 SBC..
Sorry to hear about your troubles....Get a clutch and fix...They are good old trucks...