John, Here is a recommendation from an RX-7 site and as you can see one of
their recommendations is the Magnecor wires.

 Spark plug wires are a critical component to a performance machine such as
the RX-7. To meet your needs, we offer both the Jacobs Energy Core wires and
the Magnecor ignition wire sets for high performance and the NGK wires for
stock replacement and street performance.

 http://www.rx7.com/


Ed Anderson
Matthews, NC
RV-6A N494BW
eanderson@carolina.rr.com