The drivers side motor mount bolt is a good place, threads are the same as the sensor adapter and it`s easy to get to. Replace the bolt with the adapter, tighten it good, then install the sensor and snug it down lightly.
Another way is to move the stock sensor to the bell housing and install the J&S in the stock position. This makes the J&S more sensitive than the stock sensor but involves drilling and rethreading for the J&S.
The J&S is the best mod I`ve put on my Impy. Really brings out the potential of the turbo!
ED @ ISR
96 1.8 turbo