1.5 - 1.7 rocker ratio

I would definitely measure piston to valve clearance before buying. I just swapped in a Lunati roller in my 2003 360/300 HP crate motor. Stock pistons .053 in the hole, Thin Mr Gasket .028 headgasket, .010 cut on heads, OEM 1.6 stamped rocker, .060 lifter preload, 234/236 @ .050 495/475 lift. Intake valve P to V clearance is .057, exhaust is just over .100