Found an online resource which sells decently priced base plates for the P365 magazines.

Personally, I prefer the feel of the 12 round magazines but will be soon living in a state with restrictions. Depending on which you prefer, $15 isn't bad for a base plate. Hope this helps others.

https://www.shapeways.com/prod...5-full-grip-base-pad

I have two of their 10 pinky extension floorplates. I got mine long before the mags were as stocked as they are now. Good stuff. Went on a little tight, but worked very well.

Shipping was like 2 weeks though

Very interest!