[cobraduke]

Tradingup
I think you are right. I know some of the welding on the four hole flange to the cat on my car is really "after market". Looks like some one in high school shop did it. But it hasn't failed! I may be wrong, but I think both type factory systems uded the Ford 5.0 exhaust headers as part of the system, whereas mine has a a kit car set of tube headers that terminate in the square four hole flange. I have no info on the source of these, but my quess is that they could be Classic Roadster since the two cars are so similar. Perhaps what we both have is CR systems with cats?

Mike