YSO81G

Hi, I have a 87 Nissan Pathfinder 4x4 with a 2.4 carby motor in it. It has NO kahunas! I need to upgrade to an injected motor with reliability. The more simple the better. The cheaper the better. I'd like to stick to a nissan motor. But at the end of the day i'm definetly open to any ideas or past experiences. Cheers!