Lightnings weigh closer to 5,000 lbs. I believe 4,700 lbs. is about the exact weight, with bedcover and driver, you are looking at about 5K. My friends 01 L weighed 4700 on the dot when it was stock with no driver (before sound system, bedcover and chrome 22" boat anchor rims). An 99-00 Lightning is about a drivers race with a 99+ GT, the L might be a TAD quicker, but barely, my two buddys who are brothers raced their cars, one has a stock 00 L, and the other a 99 GT 5-speed with K&N, and Flows (stock H-pipe) and the GT had about half a car on him. An 01 L is faster than a GT, but I've seen well driven GT's come damn close. A GT with MAF, gears, pullies, O/R midpipe and mufflers should be about a drivers race VS a stock 01 L. Stock L's aren't TOO much faster than GT's, once they do the simple BPU mods is when they really start kickin' ass.