plastic and vinyl dont weigh that much....the tar and carpet on the floor is alot more than the plastic/vinyl...I am going to have to get my 81 280zx on the scales soon, ttop car, auto stuff still there (have 79 doors i will be putting on just for more weight savings if its not where i want it), NO dash, wiring taped to crash bar/run to cluster/triple gauge cluster, heater core/ac comp/lines/condensor/nothing that was under the dash just the wiring on the bar, extra brackets/junk in the engine bay that isnt needed,bumpers, single celica cloth seat, no tar on the floor/home depot carpet padding (lightweight multi-foam stuff) adhesive sprayed to the floor, NO interior pieces or door panels, no spare, header w/ 2 1/2" exhaust (still lighter than stock), all brackets/junk/etc on the bottom of the car is gone...still have a little more to go but i am hoping for 2k-2200 with me (140#) & gas in the car.