1986 mercury 25xd

[gfinch1050]

Just got a 1986 mercury 25XD for $300 that runs,,with controls and steering wheel. What dose the XD stand for. Got it for a online local swap on facebook. just lives across town from me, so I had to get it fast before someone beat me to it.

What dose the XD stand for
thanks

[boats.net]

It's just a model, don't remember it actually standing for anything.