You will find the twin cam engines in early generations of Hyundai and Kias as they used Mitsubishi drive trains under license. Lantra, Optima - most cars built before 1991. If you can find an early Gen 2 truck (87-89) they were optioned with G63B engines - this is where you'll get the right type of 5 speed for your build, or the Sapporo but it has to have a 'narrow' block engine to suit the G63B/4G63. I'm not sure of what early Mitsubishi coupe and sedans made it into south america but you have options. Check out this site -

http://projectzerog.com/

And this guy - Jafromobile on youtube (this guy knows his 1G and 2G engines inside out)

https://www.youtube.com/watch?v=FVpbeTobo-c