Full lotus provided me 2 of them when I got my deck. $400 each I think.
They also have a split ramp that you can use for both your sxs and sled and will probably fit in your existing ramp storage spot if you add a cross support.
Their ramps are very heavy duty and strong for a heavy sxs. But heavy to man handle.
I have a truck boss deck and purchased the single track ramp.. Found it on kijiji and purchased used.. It's the exact same as my sled deck ramp, only its 10 or 12" wide so you can adjust to the proper width and drive right up..