Upgrading Sanyo type SK 522 3-ways bass reflex for wallhanging

Greetings fine gurus.
I intend to renovate and upgrade these beauties. They are for a friend to hang on his walls a meter or two from each side of his TV. They will be driven by his Denon AVR with Audysey.

I will make a test-baffle for the drivers

Should I align acoustic centres to limit delay?

I ripped a pair of Proson stand mounds, and hope I can use some of its components to create a decent crossover

Do you guys think its doable? I have some hi end car networks with more parts

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Here is the original filter:
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Here is the donor which hopefully will provide some of the components. I may have some more lying around
:
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The little ones:
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Cheers!
 
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