Weight safety and removal

Does anyone know how much the rear seat of a 88 hatch weighs? I got around 30 or so for all of the brackets , belts and seats. I took the seat out and took out the inner fender wells, goo mat, insulation, AC, condenser, and a few other things. Also does anyone have a belt no. if you remove the smog pump and the AC? I have the AC off I put a diff belt on. Now I want to take off the smog pump and need a no. for the belt? Thanks for any info. aphroditwelsh@accesstoledo.com if youu want tosend