Put some dents into the dougs for the torsion bars to fit without touching the headers. Passenger side was just one pipe, drivers side was also just one pipe, but they're really really close to two other pipes and we'll see if they interfere once the car is on the ground and running (in the next few days). I also spent some time retapping the very front #1 and #2 cylinder exhaust bolt holes in the cylinder head which had some damage and were enlarged (one size up) by the previous owner. So I'm not super thrilled by the fit of the doug's headers (specifically the sway bars touching), but perhaps that's just my car which is a slant 6 conversion to 318 now. Had to be done as the old flowtech's needed to be replaced. Will yours fit better, maybe, and who knows. 50 year old cars with different tolerences an 1/8" here or there could make a big difference. Just be prepared that it could take you a while to "drop them in".