I have a set of BA Pro 5.4, I am looking for the angle mount hardware. I tried fixing them with out much luck. Some idiot broken my hardware doing some simple work on my car //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif I think the tweeters are 1 3/4 and maybe interchangable with .2 series as well. Some of the lower series (rally) may have these parts as well. If anyone has these parts laying around let me know.