Last week I asked what car is this? Very few were made. A road-going track car. Three Weber DCO3 carbs. Disc brakes same size front and rear. Other cars similar Ferrari 250 GTO, British to the core. Three Webers is the first clue so it is a six cylinder, and a British six. Most likely a Jaguar and the XK SS was the correct answer.
So to this week. What is the commonality between a Roadpacer and a Parkway?