mercruiser 470 crank in a engine

[aonemarine]

I was wondering if anyone had sized up a mercruiser 470 crank for potential fitment into an a engine. Thinking that if one is casting a block then sourcing a suitable inexpensive crank should be a consideration..
The merc 470 gets some bum reviews now a days, but I had the pleasure of working on a few of them 15 years ago and they had some pretty impressive power. They were pretty plentiful back in the day, and I bet there are still many out there to be had cheap.
Thoughts??