If the car has sat for the past 15 years, I'd be going over the brakes and fuel lines just as a safety precaution. I'd also pull the valve covers and have a looks see. If the motor sat for a really long period without being turned over for that many years the valve springs may need replaced. As far as ET I'd say since it is an older build it probably has nothing to fancy done to it, but looks like the car has been lightened up some. I'd say it should run 10.50-11.0s in the 1/4.
