The timing belt must have jumped. I removed the valve cover and timing belt cover, then removed the distributor cap. I rotated the engine until the "UP" stamp on the cam sprocket was...up and the two horizontal lines were in line with the cylinder head. I removed the #1 spark plug and confirmed it was TDC. I looked at the distributor rotor and it was not pointing at #1. More like #3. So I put it all back together and switched all the plug wires one over and it started. I had to adjust the distributor a bit more counter clockwise to get it to run better but it seems to run fine now.

Question is, will this be a problem? My spark plug wire configuration to the distributor is now like this (as you look from the rh fender):

13
24

It used to be like this and all other motors I've seen look like this:

34
12 is this the stock configuration?

I've got 170K miles on it and it runs great. 35mph, no oil leaks, no oil use. I want to drive it until the wheels fall off...

Update, as I drove to work today, I noticed that is was a bit sluggish off the line and up hills. Seems like I need to advance the timing a little. The distributor has some room for adjustment but how much is enough? I've almost run out of adjustment in the housing slot. Since I believe the T/Belt jumped, I may have to go back to it and put it back in the correct location instead of adjusting the spark plug wires c/wise one spot and adjusting the dist.

Any help on adjusting the timing is appreciated.