Downpipe HELP w/ External Wastegate

[Greg21]

I have a problem here with the KA-T im going to build.

The setup will be a SSautochrome topmount manifold, with a external 35mm wastegate. The problem is that I don't know where or how I'm going to find a downpipe that will connect to the wastegate and the turbo compressor housing and merge into one before connecting to the cat.

If there are any guys w/ KA-T that know how to find these pipes let me know. Or are there other ways that the setup can be done.

If you're not sure what I'm talking about I can probably find a picture of how the setup will look.

Thanks, Greg