Best headers?

May be replacing the headers on my project car(71 Plymouth Valiant,318,904, man.steering) I have a set of hookers comp. headers in it now and they are in rough shape. They have a small leak have been patched where they hit the road. Steering linkage passes through these and the motor has to be jacked up to install/remove these.
What are the easiest headers to install? Best price? Longest lasting? Need to bolt up to my dual exhaust