RE: HELP!! I need a picture of an older 318 motor
I gather you mean the right side as you are looking at it. The Right (passenger) side has the Alternator and you should not have needed to completely remove that to do the water pump.
If you did remove the Alt completely there should be two spacers on that side. The main support bolt on the alt go into the alt, into a large spacer, into the second hole on the alt then into the smaller spacer and then into the block. The larger one keeps you from bending the alt, and the shorter one keeps the alt out from the block. so it doesnt roast the alt. The middle bolt from top to bottom on that side holds the swing arm for the Alt and you would have needed to remove that.
On the Drivers side, you have the PS pump, and the Smog Pump. The lower two bolts on the drivers side of the water pump support the ps pump and there is a third bolt which is the pivot of the PS pump which goes directly into the block if I remember correctly. You should not have needed to remove that bolt either. Of the three bolts on the drivers side, the lowest is the tightening bolt setting the PS belt tension. The middle and top bots attach the smog pump mounting bracket. There is a dogbone like spacer with 2 holes which goes between the smog pump bracket and the PS pump bracket. If that is the spacer you are talking about, the shorter hole goes agains the PS pump bracket. The longer one goes agains the block and both holes are used by the bracket that mounts the smog pump. I can try to take a picture of it, but the radiator is really in the way.
I did my waterpump about 2 months ago so it is kinda fresh in my mind, though since then I have also done the Alt, the radiator, the feul pump and I suspect that I need to do the PS pump now too.
My RC sat for 4 years, so now I'm finding everything is shaking apart during my 1700 miles this month.