reverse manual valve body

The VB for the 904 and 727 are the same for comparable years. I could be wrong, but I think there are about 3 maybe 4 different VB's depending on year. I think the difference is mostly things like the manual valve/ detent comb/ neutral safety switch configuration (in the non lockup units). I know the 1960-1965 cable shift VB's are one setup, and the 1965 is different then the 60-64, but will interchange by using the correct manual valve, and detent.