Arron posted a link to the Empi D series a dellotto clone.
Here is a link on STF regarding issues with these.
https://www.thesamba.com/vw/forum/viewtopic...asc&start=0

It appears that the issue is the location of the first progression port. I don't know how much of an issue this really is. They seem to have initial QA problems that may already be resolved.

Carlos