There has been a long discussion on the perforated seats option on another board.

From my reading... You can upgrade to the perforated leather. It is in a package for the 3.0 and a no cost option for the 4.8 model.

You MUST get the perforated seats if you get the ventilated seats option... obviously.

One buyer reported he is being told he CANNOT get the perforated seats without purchasing the ventilated option.

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2007 4.8i, Space Gray, Dark Burl Walnut Wood, Black Nevada Leather

Packages:
ZCW Cold Weather, ZPP Premium, ZRC Rear Climate, ZSP Sport, ZTP Technology

Options:
217 Active Steering, 322 Comfort Access, 328 Running Boards, 496 Heated Rear Seats, 610 Heads Up Display, 655 Sat Radio, 840 Increased Top Speed to 150 MPH ,2LE 20" Y Spoke Wheels.

Mods:
Stainless Steel Pedal Pads