[Halon]

that's 67mm exducer. They name their turbos different than PTE. PTE uses comp inducer and turbine exducer (i.e. 6265)

BW uses comp exducer and turbine inducer (i.e. 83-74)

So the 67mm turbo you are looking at, would be more commonly referred to as a 53mm turbo (that's the inducer).

The 83-74 (a 62mm turbo) they rated at 79lb/min!!!

And the real 67mm turbo (91-80) they've rated at 94lb/min.