[GTX JOHN]

I have run the 5205 Hookers on my 64 Plymouth and the
fit is pretty good.
If you have the 66 up K member in the car which was common
in the old days they will not fit.
5215 were made on same jig and they also should fit,

I do not remember any other mass produced catalog
header that fit back when I ran my A/SA 64 Plymouth.
The 2 Inch Hooker underchassis were faster.
The 2 1/8 Hooker underchassis were not as fast.