I'm not sure either, but 140mph is over 220kmph... The compression I don't know because my mechanic did it and told me that they were all within 3psi of each other...

Depends on how fast I'm trying to drive, but if I'm going all out I usually shift around 6500 rpm, give or take.

As for the bodywork on the car, I will need to do something soon whether I keep it or not.. the paint is cracking on the hood, peeling on the roof and rusting on the quarterpanels...

I think I'm going to just drive it for the next few seasons, as is... I'm spent right now anyway... tuition needs the attention now.. <sigh>