Speedjet - whose Dash 8s are you talking about ???
I was referring to QRA's - Skytrans.
From the CASA website, they have Dash 8 serial numbers - 004, 005, 008, and 173.
004 in particular is a very early mod status Dash 8.
I heard at one stage when EAA were preparing aircraft for sale that Bombardier were interested in purchasing it for research purposes.