360 boost pistons?
Rumble found the deepest dish piston of 18cc, good job Rob!
I can’t seem to locate an off the shelf piston that fits your requirements.
The GSX piston has a higher CR than you’re looking for and it’s a 4032 forging.
With boost and a healthy dose of N2o I’d run a piston with 2618 forging.
Edit, what’s the head CC’s?