Was thumbing through some old post but couldn't seem to find something as a kit with the fitting gauge and sending unit. Also does the edge CTS run fuel pressure? If not is there a link I can find all the goodies for a gauge?
As far as I know, you are correct, no kits are together. I had posted a number of links in the past, but as time moves on, the product offering links change as well. There is nothing special about the parts involved or even how to do it. A simple 100psi pressure transducer from eBay (over 1086 sold so far. $28), a 12x1.5M - 1/8"NPTF fitting to slip into the fuel test port ($6 available from many locations), and a 45* or 90* elbow ($3). Some have run hoses in fear of vibration issues, but I didn't since most of the other engine pressure transducers are mounted right on the engine and they do their job quite well. You will need to tap into a power source (usually 5v) and attach it to one of your monitors analog inputs. Your CTS manual should tell you how many inputs you have and what voltage is supported.