[speeder]

So how much are these copies?

The problem w any factory sport seats is that they weigh a ton. The easiest weight to lose in a 911 is to take the factory seats out, put them on the shelf and install some lightweight Recaro or Sparco seats. Instant 80 lb. loss in some cases and w no trade-offs in drivability or comfort, if you pick the right ones. I prefer Recaro Pole Positions, they are similar to factory GT3 seats but much cheaper.

Early factory sport seats are the worst offenders, ('73>), they must be made out of lead.