IM using K&S 70 CC Can's and header length is 9 "

Good luck in finding the flange's already made up. I had to buy a set of flange's for the bme & header set's for a DA 100 that had the header flange's welded up for the da 100. because desert aircraft did not have the elbow's in stock. Then i had to cut off the header flange's for the da 100. then have the bme flange's tiged on.......very costly.

I can post a picture if you like of the header's