Building a stroker, advice please

I should have a 4.125 4340 crank available soon from a very respectable source, it will use an I beam rod, dish CP piston and 1.2mm ring stack!
This coupled with some port work on your intake will make at least 550HP....at 10:1.
Brian

I've read up a little on the 4.125 stroke, not a lot of positive reviews as far as longevity.