Although this is the wiper assembly shown at Mike's in the previous photos posted, I believe there is more to it than just that part alone. Just like the pickups which used the hand-held wiper, there is a bracket that is also attached as part of the complete setup. This bracket on a pickup is a part which is difficult to find in my opinion. There is a difference between the closed cab bracket for a pickup and open car one, I believe. Here are photos of the brackets and I believe the wiper assembly can be installed without the bracket, but is probably subject to leakage without it. Just guessing on that though.
I may be incorrect on this so correct me if i am.