ISO replacement trans

ISO a transmission

Need a replacement transmission for my e60 550i

It’s the 6HP28 transmission with the dct style electric shifter and sport button. Don’t need the shifter, just the trans. Hell I don’t even need the tcu, just the trans with good gears. My 4th gear is going out due to really high mileage (250k) and I need to swap it asap.

Willing to trade a really low mile 6hp21 that’s got a fresh service and 97k miles on it. Currently set up for a swap on an N52 E90 328i. Xhp stage 3 tune as well.