I can not help you but in my case I plan to use this http://www.advanceadapters.com/products/pn-716073e/Advance Adapter kit in the 4l60e to np241 adapter.I will not wiring the 4 low signal to the PCM and flash 2WD tune...the trany should shift ok in 4 low but the speedo will think I go faster then I go in reality