Hi, yes that is the correct line. I didn't buy a pre-made kit for mine... I just went to the local Home Depot and bought 2 ball valves, a "T", and a few feet of line, and a few hose clamps. Wish I had taken pictures.....
Cut the line half way between screen and where the line enters the floor. Install 1 ball valve, a short 2 inch piece of tube, then the "T". Connect the existing tube that goes to the pump to the other side of the "T". On the final leg of the "T" connect a short piece of tube, then the other Ball valve and a then a few feet of tube. Waalaw!!! done.
1970 F250 Highboy 4x4
2013 Cougar 21RBSWE