Sorry for the delayed response, I was kind of busy yesterday. By the way, thanks for all your inputs, I really appreciate it. Anyway, the reason I was inquiring about adding an intercooler was mainly because I already noticed that the hood had the ducting necessary for adding an intercooler and it would be a good idea to make use of it since it was already there. Actually I'm not really into offroading, another reason I wanted the extra power was because the Pajero is our main family car and since we go up to Baguio often and haul a lot of stuff, I figured it wouldn't hurt to have that additional power for the trip.

One question though, how difficult and expensive would it be to get all the parts/components necessary for the upgrade? I'd like to keep everything to factory spec and use as little fabrication as possible. Also, where can I get the parts I would need for this project?