I just gave them a call to try to verify the fitment if I wanted to install them on my '68 Dart with PS and a 273. The tech guy didn't seem too knowledgeable. With regards to the PS hose he said, "If the line goes straight up, you may need to move it 90 degrees to clear it." He also said the headers may come close to the coupler. Apparently they fit a pair on a "1967 Cuda."

One of my friends said not to buy them and just save for some long tube headers (Doug's or TTi's). But even with a built up 273, I don't think it would be that much of a problem.

Chased the same vibration for years 60-65, different diff, 3 tranny's, 2 used shafts out of other cars I owned that had no vibration, new DC drive shaft, eng mounts, trans mounts, belanced the eng, 2 flywheels, after 25 yrs I decided to live with it. finally a Schumachers poly trans mount cured it. I was getting conversion mounts for something else and thought what the heck, I'll give it a try. Smooth at any speed