anyone ever try the new 426 stroker

I havent seen one. I'm guessign they still use the Mopar 6.123 rod, which would leave a real short piston with a 4.18 stroke crank. I'm a big proponent of adding stroke to street and street/strip combos, because it lowers the required power band, and they have more torque available from idle on. But I think unless it's a bracket type car, I wouldnt go longer than 4" because of the piston skirt length and side loading. If it's stricly cubic inch...find a thick enough 340 block, and a 422 is a .060 over bore with a 4" stroke. If this is an offshoot of the low 11s post, I think a 408/416, with good heads, will be plenty enough on pump gas with a race suspension to get you past your goals.