Well, I spent some time on this thing and was able to fix the P0200 code, turns out the connector in the harness for the #1 and #3 injectors had bad crimps on the wires. I replaced the connectors and cleaned up the wiring to the MAF and it runs great now. Moved on to the water leak, it ended up being a bad water pump. Replaced that and new gaskets and all is good. Drove it a little yesterday with Korbin and did some data logging and it all looks good. It won't go to 100% throttle opening, but for now that is a good thing for Owen, its my own built in speed limiter..
Now, a few more clean up items then a good bath for this thing and it will be C10's in the Park ready! I drove it to work today to see it highway manners and I am very pleased with how this has turned out. 80mph on the interstate is 21% throttle and 1940ish RPM. This is going to be a great cruiser once we have the AC back in, the power windows functioning correctly and add in cruise control!