Looking for 4" ball flange for Banks elbow on my HK35
 

Got a used Banks brake without downpipe or clamp. I can fab the 2 bolt clamp deal but I'd really like to get the 4" ball flange.... I've found nothing, so even if I need to get a whole downpipe let me know what you have. I'd rather not since I'll need to cut it up anyway (fender exit exhaust with the 13sp between the frame rails)