The only one stomping feet like a child in every post is you, too
Your problem is not those dash mounts. Your problem is you. You are the problem. Your solution is to stop being you stubborn and arrogant to realize that your idea is bad and to abandon it in favor of a good application, many ideas for which have been suggested.
There is no good solution to where you want to mount those speakers, even though you've been given ideas on how to repair them and get them mounted.
Unfortunately, you lack the reasoning ability, maturity and humility to realize your errors or to post with any kind of decency. I'm sure you'll give some lame, unwitty response to this as you angrily dismiss any and all advice you're ever given. You'll probably never learn.