See I don't know if it's one of those things like....
The G35 has different sensors for each production date, they really did change the transmission a billion times each year... That's why Junkyards say they're not interchangeable
Or it could be like my 4th gen maxima... We all know the 95-01 5MTs work fine on our cars but the Junkyards list them differently 95, 96, 97-99, 00 and 01 are all supposedly different....

They're not.
I'll have to spend some time @ the parts dept. they're rarely helpful.