You need one for an 82 or 83 if the transducer is on the fenderwell. Also, for whatever reason as I've never researched it, the 83 H/O has a different part number servo than the non-H/O 307 according to the parts book. NON-H/O p/n is 25074420 if you can find one. If you have an 83 H/O, the B...