IM’s version is fashioned in hard aluminum II believe and they are held down with screws that hide in the carpet square weave .
Yhe original had overlapping carpet with a sewn edge which gapped a bit as a pant side pocket they were pretty cool in my original.
Glad to see you do those Carey, very nice addition. I think they are special order at IM but you have to request them as they are not on the custom order sheet at order time same with moving the wheel archways or pie cuts for 6 cyl. Cars
Great convenience item IMO
Now @chines1 are we getting a 356A coupe from you sometime? That new frame should work with any body