Not possible. The neck angle to the body is wrong and as Ibanez set the neck angle both with the heel and pocket, you can't easily shim it to get the correct angle; there is also not enough wood left at the bridge to install the inserts and studs for the tune-o-matic.

The best you can do if you want a fixed bridge is to simply deck the existing bridge and take the arm out.
Yes, I know everything. No, I can't play worth a damn.
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well its not impossible with enough woodworking experience and money and reasources

but it wouldnt be worth it

if you want to hard tail it just block the bridge