PayPal: View Cart NL4 ... No more paddle wheel ... NL4 Custom Fit Packages and Prices [click on the Make/Year] The NL4 purchase price  includes a GPS Receiver.   The NL4 is mated with the GPS         Receiver  and tested prior to  shipment. This assures your  purchase has met our quality and performance standards. ...Got the package last night and  installed it in the boat. We went  to the lake today to try it out.  All I can say is wow!!!! Review our Policies before you buy...