I remember a past post here where a member chimed in saying that on the low deck 511, the piston pins holes were up in the ring lands/grooves?
Is that significant in terms of durability?
I don't believe it is, these stroker pistons have a pretty good skirt.
I run the same compression height 1.320 in my 470 as the 511 with 6.700 length rods and there is no evidence of the piston being less durable.
My only concern pistons would be the 1.12 ch 500 ci stroker but in my opinion that is supposed to be ran for less than 10 seconds at a time besides warm up.
But I can't say that as a fact.