I have a 73 challenger with 440/ 727

The headers that are on it now are at least 25 years old. Leaks all over the place.

Straight pipes into mufflers with turn downs before axle.

I want to replace the entire system .

Who makes a good kit. Gaskets and fasteners ? Mufflers?

The car is more or a driver than show car.

My current headers have been on so long I'm worried about breaking the bolts off in the heads . Any tips?

How much $ for the whole deal ?

As always , thank you for the help😀