Late A headers on an early A (smallblock)

Headers on a Early a body barracuda 64-66 for instance is difficult and very tight fit! I have seen some done where they cut the side out to make them fit or custom to go around the drive shaft on one side and bent on the other side to fit. Reality is most small block motors do not need headers unless you are going over the top drag racing and high end horsepower. I had my 66 prior to its being run into by a fool, running 12 second quarter mile on well fitting and slightly worked normal exhaust, just set up as dual pipes that had good flowing mufflers. Its all in the motor not whats going out, my current 65 formula S is set up the same way, just not quite as fast yet! It doesn't have the head work yet and cam set up! It runs 15.0 on the button as it is just a street driver and fun car! 318 4bbl but someday I will go for it down the road, its just money!! I need to do body and paint first to finish the resto. Then back to gogogogogogogogogogogo!