Hi Andy, Here's a thread from 2017 on my install. I riveted them to the side panels of the Coco Mats I bought, and then Velcro'd the assembly to the side panel. Still working well. Cargo net install on the 2nd page of this post:

Thread: http://www.talkmorgan.com/ubbthreads.php/topics/477781/2

I bought them from Amazon, can look up specifically which ones, don't recall at the moment. The aluminum backing strips are helpful to stiffen-up the pocket against the mat. I subsequently removed the passenger footwell box - it's useless - and only keep reg and insturance papers in the driver's side, use the passenger for cables, etc. Works well.