Mopar 400 block 8 sleeves

AndyF said

I have a 400 block sitting on a pallet waiting to go to the scrap yard that you could have for free if you were local. I'm tossing it because the cylinders are too thin for a stroker. I'd never put multiple sleeves in a 400 block but I guess you have to do what you have to do.

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Where I am the options are limited... Wish I had the market you guys have.
My next step is getting aluminum block. Big expense for me but seems more future proof.
Just got full Indy top end ported by Nick Wilson. It’s new and spent some years waiting for project that never happened.
Took my old top end off and discovered what I discovered...
What is the problem with sleeving this block in your opinion?