Back in the 70's they had it on the drivers side. Everything that I'm discovering about my truck is that the motor is actually an 87+ motor. It's a crate motor that the previous owner installed. Me thinks it's this one:
http://www.jegs.com/p/Chevrolet-Perf...31165/10002/-1
But I haven't really gotten all the way into the motor yet to pull any identifying markings to verify my theory. But everything so far is pointing towards this..