After Adam stopped carrying the X-37 I reached out to SS regarding the cyborg and other hybrid options, this was his response:
Actually, what I've done is combined the best of both turbos.
The cyborg has always had a compressor advantage over the X-37. Our compressor wheel is superior in more ways than just plan size, it goes beyond that. It's a custom, designed for THIS TURBO compressor wheel. We own the rights to this design. Our inlets are better in every way as well. The X-37 has, up until this point, had an advantage with a larger, better flowing exhaust turbine wheel. Through an investment in tooling, we now share the same ability to make turbos with larger turbine wheels machined into the housings. So it's the best of the X-37 turbine wheel combined now with the best of the cyborg compressor wheel.
If this is the case then the c39 is an improved x-37. Listing what the full bolt ons for each vehicle are in that video may provide some answers.