[asperformance]

the block is CNC machined to take the "insert" which is also a CNC machined "plate" designed as an interference fit, possibly this pic shows the 2c parts better (dont currently have any individual pics) - once installed it cant move due to the operations we carry out



as for power rating we have done numerous blocks over the last 12-15months with power in the 600-650 region, we have also extensively modded blocks by "pegging" and carried the inserts through as a development of what we learned from that process - pegged blocks were/are used at circa 700+ / the "inserts" are less intrusive/disruptive as a process and offer far more support as its basically a figure 8
with pegged blocks they always require boring/honing because of the distortion induced during fitting however the "closed" blocks only ever need a light hone at most generally

as for std factory CDB's then we can't quantify this better or worse but it basically replicates the facory design BUT with less impact on the water jacket