Looking for the approximate transmission mounting surface to rear driveshaft flange measurement. Searched and could not find measurement for this case. Curious how it compares to the FJ60 split case I have, I am interested in running an H42 and NWF Black Box, which would allow me to use the HF1A case if I wanted. Hard to tell from pictures but looks fairly close to the split case, but if it is shorter it may be the better option for my 40.