One of the local car mills has a nice 90 for sale but I cant figure out the air cleaner on this one.On the left side of the housing there is a nipple, as seen with the red cap.I didnt know this type of housing was produced in 90 and there is a threaded bung on the right side that one of the sensors that was mounted in the air horn is now mounted in the housing.I recently bought a new air cleaner housing for my car that has this nipple on the left front of the housing.When I asked the parts guy about this I was told this was a later design.[IMG]

[/IMG][IMG]

[/IMG]