I've use several sets on customers and my own pump gas street and strip motors with no problems that stop the build or failed after going into service
![up up](/ubbthreads/images/graemlins/custom/thumbs_up.gif)
Like anything else, make sure you know what you want and need before deciding on buying and selecting any Hi Po parts, cheaper is not always better
![work work](/ubbthreads/images/graemlins/custom/work.gif)
I'm getting ready to build a pump gas 3.91 stroke 440 motor to sell, it will probably end up with a set of the Icon pistons with the reverse dome, D dish, pistons in it to make between 10.0 to 10.5 to compression ratio with a set of aluminum 440 source Stealth heads
![up up](/ubbthreads/images/graemlins/custom/thumbs_up.gif)