Call John Vinson @JVX 901-274-7248 he just starting making these they are not listed on his site. John is semi retired and while he and I were talking about a 727 he was building for me. I asked about doing a 8HP70 adapter he said if there was interest he could do it. So I put the word out and he got enough interest and he's doing them now. He has BB and SB kit. Russell Drake at Sound German Automotive can help with the controller. I have my adapter kit but not ready to start the conversion yet. There are some SB LA conversions done I have heard. Go on facebook page LA-B/RB Engines to 8hp70-90-NAG1. There is more info there.