I need some fuel sending unit experts please

Main Page - rte Solid state replacement for your ivr in the gas gauge. The factory unit is supposed to cycle to provide an average of 5 volts. When mine failed it stuck closed and pegged the temp and fuel needle. You can simulate 5v with 3 aa batteries taped together in series and see how the needle deflects seeing as you have the dash out.
Thanks, that’s the one I was looking to buy but I think their web site’s order page is down.