Respectfully NOT a good idea mainly because the column strength is lost when sizing the block for the sleeve. There are ways it might work but it would be a lot of ...WORK. (brazing and machining etc) Then it still a crapshoot if it'll live.
I have a standard bore 400 mock up block here at home that's cracked in the main saddle.
I was going to bore some holes in it to see what I can possibly get done. I do think 4.500 is too big for a stock casting. I am a engine machinist so atleast I won't have to worry about those costs.
I have also been thinking about Ford 460 sleeves and running a 4.402 .060 over 400 piston, that's a more reasonable bore size