You'll get a lot of fairly good educated guesses on this site, but every car is different based on how it is equipped. Factory options equipped and aftermarket parts like wheels and heads can make a big difference.

Best way to know for sure is to weigh it. Many truck stops, race tracks, and moving companies will have a scale. Might charge you and your buddy a couple bucks but then you will know for sure.

Be sure everything is equal--gas tank full or empty, driver in or out of the car, etc.

Nice car, BTW.