Depends what brand headers also. One of the more popular headers are the Summit headers.
The price is right but they usually need to be dimpled to clear a power steering box, and the drivers side hangs a little low, but probably acceptable with 2" drop spindles.
Here is our '71 with Summit headers and 2" drop spindles. The headers are not as low as it may appear in this pic, the lift has a jack system that you are seeing. Note the difference between the left and right though.
I have the Summits on my '71 with at least a 2" drop (probably more...I got crazy when I was trimming the springs) and a clutch. Yes, I had to dimple them to clear the PS box and the clutch return spring doesn't fit at all, but other than that they are fine.
I'm running the Doug Thorley Tri-y headers for P/S 4-speed and 2" drop,oh and angle plug heads. When I went to put them on I thought,"no friggin' way these are going to fit".Jacked it way up,dropped the p/s box(just let it hang),pulled the plugs,(even then I had my doubts and thinking how I have to send them back). And walfigginla! They are so nice!:yes: The frame is lower than the headers.I put it on the ground and the lowest thing is the engine crossmember. I already cut the scattershield lip years ago when it was on a racecar. I did have to move the Z-bar plate back on the frame because the z-bar tube just hit the header tube and no way was I going to ding those pretty things.