A 1991 SSE parts car, I don't know if I should find one and keep mine going or let it rest in peace when something major goes on it?
Second question is........are they hard to find?

You're in the wrong site to hear get rid of it. There'* only one way to keep livin' forever. This side of an accident, almost everything is fixable. As far as cost, it'* not worth it to even replace the lighter in these anymore. But the intrinsic value now that'* another story.........

I picked up the 95 recently which I was thinking would replace the 90. I'm finding that when things start going on the 90 I just deconnect it. Who knows how long that can go on for???????? If you know what I mean!

Hard to say- but 91'* are harder to find- there weren't as many made. The highest numbers of these cars were (or so Ive been told) were the 88, 89 and the numbers started to drop for the 1990. (everyone got excited about the 1992) and that is why there aren't as many 1991'*. But you never know.
There are several differences between the 90 and 91. I couldn't list them all, but wiring is one, the door lock actuators is another...

I know that the heater core is different.
My car was made late in 1990 and has some 1991 parts on it.

Hey I was just checking out the autotrader and there is a 1991 SSE with a complete parts car in Hamilton for 1350 obo

http://www.trader.ca/Search/Details....74%7C&awatch=1

So it'* about 40 mins from you.

If I was closer I would definitely be checking it out.

Damm- I wish I could jump on that
one that runs, and a complete parts car....

I've found those gen from $900US to $100 US depending on condition. Several end up in the junkyard by me every few months. I'm tempted to ask the people to direct all people donating bonnevilles to me and giving them over the going rate that the junkyard would.

I wonder what shape it'* in, and wonder why there'* no approximate mileage?

Probably no mileage cause it would scare anyone off, OR the odometer broke like on mine and they don't know the real current mileage.