I've searched and seen a lot of post about swapping an lb7 trans into an lly and vice versa. Apparently you need to change the valve body, NSBU, and internal trans harness due to the g solenoid. What I'm wondering is if can I just swap my built trans from my 2003 lb7 into an 05 lly and put the lly trans back into my 03 and just swap Tcms to eliminate tearing into trans and being a direct swap besides changing the NSBU switch. I believe I had read that the lly trans can be directly swapped into an lb7 without changing anything. If I can't swap Tcms. Can I just flash the lly TCM to an 03 software and make it work that way. Trans fittings are the same also. I'm just trying to make it a quick swap instead of tearing into the trans and switching valve bodies.