Yes, you can buy the floor mount for this. It is about $120 from the manufacturer, but you will need something to bolt it to. This is the revised floor mount option.
https://www.nomartirechanger.com/No_Mar_Tire_Changer_Floor_Stand_p/tc-stand.htm
You can still call to verify, but bolt holes look correct. I use the hitch mount version currently, though looking at the floor mount myself. The only time I have ever come close to hitting the truck, was when I was connecting the tire changer to the truck. Almost slid it into the hitch to far.