4V Compression Numbers

[DusterRT]

I'm looking around at '96-98 Cobras. When I find one I am serious about, I'm going to do a compression test; what kind of numbers should I be looking for..what's ok, what's good and what's great?

Also, what about oil pressure? Is there a convenient way to get real numbers? I assume the gauge in the dash is just a moving idiot light, in that it only tells you that there is over 5# pressure or so..

Thanks!!