goodluck with that, its gonna be a biotch of a time, and they are finicky with rockers, actually just blew the hell out of one this week, but we were pushing 20 psi through it
my friend has a dodge shadow 2.2 turbo that we just finished rebuilding its running right at 20 psi of boost just likes to smoke the tires off in first and second and about a 1/4 of the way through 3rd. you might do some checking cause dodge did use the mitsu 2.6 in some of there cars and thing making it front wheel drive so there might be the parts out there to make a 2.2/2.5 rwd.
Correct me if Im wrong but didn't the mighty max have a 2.6 in it some years. Im not sure if its the same motor but its worth looking into. What the heck it sounds like a good swap to me i might just have to try it.