To the OP- if I were you, I would fabricate my own guard. Drill and tap some holes on the edge of either the infeed or outfeed tables on your jointer for attachment points, and make your own guard out of steel or aluminum. The jointer/planer machines you see have long arms on them because they need to accommodate the jointer-to-planer conversion. But in a fixed jointer such as yours, that's unnecessary. You could maybe buy the necessary parts from another machine and fabricate the parts you need out of wood if you're more comfortable with that.
As a side note, in my opinion, having had both types of guards- I prefer the pork chop for edge jointing and the euro guard for face-jointing.
For face jointing, the pork chop is essentially worthless because the width of the workpiece causes the guard to move away and completely expose the cutterhead at the most vital moments. It doesn't cover the cutterhead at all as you exit the cut until you're totally out of harm's way... not terribly useful.
But for edge jointing, it at least attempts to cover the cutterhead as you enter and exit the cut, and you don't have to fiddle with it to set it to the width of the workpiece (admittedly, the fiddling is only a minor annoyance).
Best of both worlds would be a euro guard that has spring-loaded fingers at the end that normally contact the fence until the workpiece is over the cutterhead, and which covers the cutterhead as soon as you exit the cut. I have daydreamed about making my own such guard... almost like a euro guard with a small pork chop at the end.