If those fenderwell headers were my only option, I would not even consider a 440 swap into an early A. I don't like the looks of them at all. Based on you handle of
@mopardude440, I assume you are really into 440s. However, if I wanted a lot of power in an early A that was not a drag only car, I would go with a stroked 340 or 360. You can get 450-500 streetable HP easily and it will be so much easier in almost every aspect. Just saying.