S200/300 weld on compressor flange

I am looking for an aluminum weld on flange to add a Vband outlet to the S256/356 compressor housings. I thought I had one bookmarked and can't find it, and can't find one on google.





Here's a link to the larger machined version for reference



http://ift.tt/1s8qTzw



Thanks for any clues