That's good; bolt those back onto the 2007 6L80, run the reprogramming and adapts and if the 2007 transmission works, then you should be fine for a while. I'm not sure I'd reuse the converter...If you can swing it, I'd grab a new one...Doesn't have to be anything fancy, but the pre-existing converter could be in any sort of shape and fail at any time...
Any recommendations for a budget friendly j2534 interface tool? I see some for like under $100 up to $2k+...