No hassle headers for 66 dart w/360?

My 64 Dart GT convertible has a 360 with 340 X heads. It has power steering and a four speed. I am running a set of Dougs D450 headers. I used Permatex high temp silicone sealer on the slip joint as per their instruction sheet. No exhaust leaks after about a year on the car. I did have to change the factory steering coupler to a Flaming River piece for clearance. The headers fit well with almost no problems. The installation was kind of "fiddley" but no worse than I expected.