Welcome to Morgan Mania George. Depending on whether you want a four or an eight, I would start with a 4, late seventies to late early nineties, stop at late eighties if you want it without computer. You can have a lot of fun (is that the correct word)in boosting them up and they are very easy to work on.
If you dont get the correct power feel from that, then look at the eights.
As we all will tell you, you will know the right one when you see it, it will pick you.
A very warm welcome George and Good Luck with your choice.