hooker super comp headers

I have been informed by Hooker that the super comp race header #5303 has been discontinued. Hooker only shows a 1 5/8 #5116 header for the 69 darts, but shows a #5204 1 3/4 for the 70 darts. whats up with that, and why wouldnt that header fit the 69? Am i just waisting my time with this hooker search?