You are right Tony, I am not a purist. These cars are very cool and probably cutting edge, back in their day. Today we drive better daily drivers, so why would we not do all the upgrades that we can to make our classic cars more fun to drive. I don't want my wife's Cadillac STS to be more enjoyable to drive, if it is I might as well not have any of my toys. I do all kinds of upgrades to my VW Beetles too. But not sure about cutting into the firewall, I could fabricate a patch, but not sure if I want to. On the other hand I may have to Vick auto, told me distributor I am getting is a little taller, even with the 90* cap.