I have purchased the ZF reman Trans/BMW units from Gopowertrains out of Virginia. I had contacted ZF directly and they actually gave me contacts at two distributors here in DFW area and when I went to them they could not sell direct to me and said I had to go to a vendor or shop to order. So I was like who should I go to. They could not suggest a shop certified ZF vendor. Anyway, I came across the ZF reman that gopowertrains is distrbutor/vendor for and they shipped the transmissions to the shop where I had them installed, Import Car Center in grapevine (my brother is a BMW technician). Gopowertrains did not charge a core fee up front and packaging of the reman unit was real nice that we put the old trans right back in place and then contacted gopowertrains and the unit was picked up by truck within 2 days heading back to ZF in Illinois. It has been a pleasing experience all the way around. The last trans for an X5 was ordered on a Friday the Reman unit showed up from FeEx freight on Wednesday of the next week.