header bolts etc

[willboske]

I own a 1988 mustang GT. I am missing some header bolts on the right side header. I was wondering if this is probably the reason I hear an exhaust leak while driving around? it is hard to hear by just listening under the hood. I also have a question about my car. I bought the car and the guy I bought it from says it is a Cobra. It has a custom paint job so there is no Cobra logo on the back, what is the difference between the GT Cobra and the regular GT? how can I tell?

Thanks,