Modern SeatsOne of the problems with the old Porsches is their seats. We knew from the beginning that the factory seats would have to be replaced with newer ones. The old ones were too soft, too low and there is no head restraint.
At the first concours we visited after buying the car we talked to an owner who had changed his seats to those from a 944 using adapter rails to accommodate the narrower track. That was the key idea. We purchased used 944 seats at the PartsHeaven swap meet for $400.
911 seats also would have worked.
You can get the adapter plates from Strasse or Automotion. They are made by Weltmeister. Or they could be fabricated easily. The over-all dimensions of each of the bars are 17.25 in. x 2.375 in. x 0.250 in. The bars look like aircraft hardness black anodized aluminum. Steel plates would work just as well. There are 6 holes. Four on the outside that match the position of the end pair of holes mounting the old seat rails. These are slotted, but careful measurements should make that unnecessary. Of course, the inner 2 holes ones match the end holes on the rails for the new seats. The distance between the two row of holes can be calculated by measuring the center to center distance of the new seat rails and the old ones. Half the difference should be the distance between the two rows on the bars, right? You can see the detail by clicking the second thumbnail picture below.
This is a major improvement in seating comfort and is highly recommended for daily drivers.
We still have the old seats which should be used if the car is ever prepared as a show car.
The seats required some adjustment to slide back and forth as easily as they should. This was a combination of the dirt and old lubrication in the tracks and the alignment of the rails in the car. They should be installed with the rails parallel so there is no side loading on the tracks as the seat moves from front to back.