archburycontrol,

I'm pretty sure they are the same as the solid lifter versions...solid. The rocker assembly is the same on both models, so that means the lube for the rockers is still pumped from a source to the center oiler, through the shafts and out the little drip holes in the bottom (gravity).

I think other than the shaft oiling, all other points are lubed by the 'incidental mist' method.

Stuart