QSC 92mm pistons and cylinders. Any real world experience?

[Alexandphoto]

Hi all

Going through the planning stage for a 2.7 rebuild and I’ve come across the QSC pistons and cylinders. For the price, it seems too good to be true. 9.5:1 compression pistons and 92mm cylinders for <$1000 USD.

I see that they are iron which I’ve read isn’t as good for heat management, has anybody had first hand experience running them though? Any issues you’ve encountered? Any additional machine work in the build phase?

Is it worth keeping the stock cylinders and just using a set of JE pistons 9.5:1?

Cheers