I've got one with a HKS cast low mount, good turbo, bit lazy at 270rwkw though.
They have good potential to for +300, but you need a built motor, head gasket, or WMI to eliminate knock. But I like the headroom, lets you play and progress the power without having to change turbo's too soon. Only change I would have made was to the larger 0.82 exhaust side, the 0.63 may be more responsive, but it is also more restrictive - you loose your headroom.
And Disco, I didn't know you wanted pics of the cover, I've got one sitting on my shed bench, never used it, could have taken pics any time - hell you can borrow it if you want.