I assume you have a 5V sensor?
Get a good quality crimper, cut the TPS 5V feed, and add a pig tail.
You can also get a 12V sensor if you decide not to add the pig tail to the TPS pin.
On the XFI 2.0, there is a wire harness available that uses the EGR circuit for a 12V sensor, which is plug and play. Don't know if it works on the Sportsman.
The XFI manual has the info how to calculate the sensor gain and offset.