What's the largest displacement number one can achieve with the 426 via boring or stroking? We've all seen the 444 kits but what else is out there? Is it possibly to exceed 450cc with the 426 engine? I have yet to find an Athena or Ice Cube type replacement cylinder or kit, and I have yet to see or hear of anyone using a 450 cylinder or otherwise. I'd LOVE to get up to about 470cc but am doubtful it's possible.