[paulmose]

I spent the winter installing a complete Griffith's system in my '85, plus adding vents. The key is to get not only MORE vents but get them HIGHER. I said adios to my clock and moved the fuel/oil gauge there, I put the Ford truck vent in the far left hole, and found this Dorman vent by accident, they make vents for semi tractors! It looks like it was made for the Porsche radio blacking plate from our host. I built some plenums for the rear out of foam core, used hardware store PVC collars (fits the Porsche AC hose perfectly) and bam, I was done. You will not believe the difference it makes. Good luck!