87 AW4 Speed Sensor replacement
 

Anyone done this before? I can feel it with my fingers but can't see the bolt that holds it on. Do I have to take the transfer case shifter bracket off to get at it or am I missing something. The drive shaft is in the way too but surely you don't have to take that off to get this switched!

Also, is it a metric or SAE bolt holding it on? Trying to do it today.

Thanks!!

TTT