Bill Tindall, E.Tn.
Why would anyone buy lamps to install in a fluorescent fixture they are not designed for? An overhead LED shop light, for example, is a combination of LED lamps and a mounting fixture to capture and direct light down. It all works together.
I can't imagine there is any savings in salvaging the fluorescent fixture to mount the LEDs into, with the whole LED fixture and lamps $20 or less. So why do it?