The pickup looks to be in the right place, from the images I've seen... so it will probably have a Stingray-type kind of sound. It's a different pickup though so that accounts for some of the sound too. The preamp is not that important. A 100% passive Stingray has an unmistakeable Stingray sound. The preamp only allows to to 'access' other Stingray sounds.
If you really want a good Stingray equivalent without the price tag... look for a USA made MusicMan SUB, the ones made between 2003-2006. The range of finishes is limited among other things, but they are true Stingrays in anything but name. Around £400 for an excellent condition used one, and they're not hard to find. I have a white one as well as a 'proper' Stingray, and it's not going anywhere.