[67chevemall]

Very small flat head screw driver and just take one wire plug out at a time and switch them all around. ( As per GMC pauls wire chart)

You will need a new oil sensor and steel line for the oil gauge to work.
I think the temp sensor is different too. (no chance to try mine out yet)

A hose for the vacum line connected to the bottom of the carb

Run a wire to the Dizzy for the tach. And a + - wire to power the tach.
And you have to run wires for the Amp gauge to the Alt and Batt.
Good idea to check all the bulbs too before you put it in.
Be carefull around the plug when putting in and out of the truck.

Good weekend project. Get a case of beer too.