i've been doing some research on these beasts. why are they so heavy? the 365 GT4/BB weighed in at 2,724lbs. the 512 BB hit the scales at 3,084lbs. but the 512 BBi clocks in at an impressively-higher 3,800lbs. these are "dry" weights off of FNA's site. why? that's a 13% increase from the 365 GT4/BB to the 512 BB; and then an additional 23% weight increase from the 512 BB to the 512 BBi. as you look at the three Testarossa evolutions, the car models get lighter as time goes on, not heavier . a 512 BBi is a few hundred pounds heavier than a 550. obviously we've got different materials, etc. etc., but the numbers seem anomalously all over the map. doody.