91 octane is fine w/ 14* and you should feel a little more over stock 10* if thats where it was.
chalk the timing marks, start the car, remove the SPOUT connector, set the timing, re-plug the SPOUT and your good to go.
you know you need a timing light right? but yes..loosen the 1/2" bolt on the dist (sears sells a dist. wrench for $8.95 and it's worth it's weight in gold. makes it real ez) and turn it...shoot the marks w/ the light and make sure your on plug #1 w/out any feedback coming fron close wires..separate them a little