430 Searching for door speaker wiring adapter (woofer)

Looking to find an adapter that taps into the factory harness where the door woofer connects. I'm going to possibly be upgrading some door speakers in a 430, but want to avoid altering the factory condition of the wiring.

I see offerings from a company called Metra, but they do not list Ferrari or have a reference. I assume this is not a proprietary connector, but odd that I have spent hours searching the forums and internet with no results, only people using taps and splicing instead of just plugging into the factory harness.

There is a company that specializes in connectors and offers to search via photo, but I had not planned on opening up the door card on my own vehicle as the upgrade is already there. This must be done in a timely manner when the car arrives and request is that all modifications are done with no alterations to the factory wiring.

 

I bought my subwoofer and amp upgrade from Mike. Great guy and awesome equipment.

Will ping him as well, but still looking for a standard industry part number for this.