Do all 1st gen tubs weigh the same?

[Dano77]

The pick up points on the rear trailing arms were moved on the body. 84-85 only. The bracket lowers the frt of the arm approx 1 inch. Wrong direction when lowering the car. The tubs were 2 pieces of sheet metal thick at the rear upper pickups with a brace on the floor in 79-80 chassis. Later chassis are three pieces thick at that point which is why later cars rust out more at the seat belt mounts. Lots of places for moisture to sit. I dont tghink the a pillars were as thick early on either and sunroof frames/brackets are on all chassis after 81 weather it has one or not. Stupid things you learn when stripping cars for the scrap yards.

[CRallo]

I'm surprised that Dick has not checked in... I know he chose a 79/80 for a reason on his rotisserie build and based on my conversions with Dick he knows the differences down to a pound or less. The man is a machine when it comes to this stuff!

If you are not on it already rx7club.com is an awesome resource for these cars and has a number of really good guys on it.

I do know that "everyone says" the early cars are lighter, but my knowledge stops there... I do know that I don't like the look of the rear of these cars, but maybe it could grow on me...