u/Bgtex

I live in Shreveport. I originally thought this was a lime tree but never saw any fruit. All branches have thorns so I think its root stock. All citrus I've had in the past came grafted low on root stock where as this looks like it's ALL root stock

Any advice is welcome. I'd like to put multiple fruits on this (lime, lemon, orange, grapefruit) if possible.

Don't care if I have to cut significantly...