Surprisingly, dumping weight off the mustangs is easier than you think. I've gone from a curb weight of 3700 when the car was new to 3450. Once you begin gutting it, you find there's lots of things that weigh a lot. Removing all the glass was a big weight reduction.
IF MY CAR WENT AS FAST AS THE MONEY I SPEND ON IT, I'D WIN EVERY RACE