Short answer, no I don't, short of finding broken old Greco TBirds to take them from- but the prices of those have been on the increase.
Maybe a lead. A few months ago, there was a beat up, but apparently still functional two pickup Greco Bird in Melbourne on one of the gear Facebook pages (Japan Guitars Australia) in Melbourne for about $700 but has now been removed. Might still be kicking around Melbourne?.
A bit off topic, I saw you made that mod on another forum (the good club of TB
)I was not sure whether the outstanding performance of the single pickup Greco Bird was due to the pickup position alone and had held off going after a two pickup Greco for fear of being disappointed. Sounds like a dual pickup Greco would be pretty good as well.
I have been similarly impressed with a single pickup Greco TB 900 that came my way some months ago.