Maybe I'm wrong but my understanding is that the sender is already there it is just the gauge and gauge face overlay that is required to make it work. If you look here;
http://www.streetinspiredkustoms.com/ and search for "Transmission Temp. Gauge Conversion Kit" It shows what all comes in the kit, It's made by US Speedo.
http://www.streetinspiredkustoms.com/ and search for "Transmission Temp. Gauge Conversion Kit" It shows what all comes in the kit, It's made by US Speedo.