Black AWIC means it is a '92 or '93 engine. the '89-91's were silver. Let us know on the rest of the numbers off the turbo. You see, the RHB52 that MZM so kindly quoted in case I missed it the first time is just the compressor housing. VF-8's, VF-10's, VF-11's and VF-12's all used that housing. But what matters is which Exhaust housing and number of blades you got. In all likelihood it will be a VF-10, but you might have gotten lucky.
I can get you a USDM Legacy Turbo ECU if you decide to go that route. Just shoot me a PM...