I have never seen such clueless people in all my life. mzmiami which sold me the frame can't tell me, and neither can bikeberry. You would think that people would be familiar with the products they sell. Amazing! Hopefully someone who has built one of these will stumble upon this thread and answer the question.
I did. They told me they were on their website but I didn't see them. Nobody has been able to give me an exact size for the headset, all they know is 1 1/8. I got a msg through eBay from mzmiami saying they listed the right headset for sale in their store.. I don't think it'll work. The listing says 32 mm and the inner diameter of my headset tube is roughly 44mm.