Fits:  65-68 911, 912
 
These short wheel base inner spring plates are designed to be used with a pair of "donor" outer spring plates from 1978-1986, combining the two together creates an adjustable pair of SWB plates with a classic factory Porsche look.  Sold as a pair.
 
The 2nd picture shows them installed on donor 78-86 pieces (not included here) but are available as complete units as well.