Just double checking before I go any further.

[cam-camaro]

I have an 85 chevy 305. The oil pressure sending unit should be right behind the distributor right? I'm in the process of rebuilding and just want to make sure I get this thing as close to right as possible the first go 'round. I checked the forums here and most info. I found said it was behind the distributor, on the drivers side. The block I have has no current sender on it, and there is a filler plug in that location(machine shop filled it in). Does anyone have any pictures showing exactly where the unit should go? Also, does this motor need a knock sensor? And where does the knock sensor go?