Hi Tony,
there are 4 gates. i have no idea what sort of steel it is.. have been told it was a mountune one. perhaps its made out of churchill steel??

the thing that worries me is the offset placement of the baffle itself. Although i havent dummy fitted the baffle, it looks like the 'box' will sit more to the right of the sump.

also the angle of the oil pick up worries me, but i have no idea!