I am not sure there is any header that will work on an early A, thats why I am building my own for the 64....was going to have them made,, as well as my headers I built for 67+ that works with PS but my guys that build our jeep swap headers want $700/pr if I order 10 at a time plus $3K jig fee. These are gas welded by hand using 3/8 flanges with virgin USA steel, they fit great, do not require engine removal and wont leak, they also dont require breaking steering linkage loose as they are above not below linkage and dont hand down. I dont know how long it would take to sell 30 sets of headers at $900 just to make $100/set which is about 11% profit before cc charges. Still looking for a company to built them for me for something closer to $500/pr. The early ones I might be able to sell because there is nothing else out there but not willing to gamble $10K to find out. Dont really want to have them made in Mexico or China