The CA cossy head :) usually from OS so have to factor freight.
I have one without cams but bought Japanese HKS cams for it.
Also chopped the primary manifold as its severely restrictive
for the size of the inlet ports. Mine was getting custom runners
to suit the ports and equal length plenum design.

Each port is like 56mm wide and 48mm tall massive to suit short
stroke ratio design and boost but mani runners are bottlenecks.