[Shaved &/or Laid]

I wanna get rid of the gray cloth and throw some black vinyl in, but the problem is the plastic rivets on the door are the kind where they melt them so they arent removable, so i have to break them off. What i need to know is how to fasten the door insert back on in a non ghetto way. i cant 'just glue' it because the upholstery will wrap around, etc..

basically what im looking for in info from someone whos done it, seen it done, or something like that.