@ChaosLord
I fitted one myself to an Apollo 1260. I used an angled type, which maybe the only style to use on this card. It nicely clears the chip on the other side of the board.
Soldering in place is relatively straight forward if you have a good eye and steady hand (I used a magnifier rig to be sure). The only point to watch is the length of the two locating lugs which fit in the larger holes. The lugs on mine protruded too far and fouled things on the other side. I just snipped them shorter before soldering in place.
You should be able to get these in your neck of the woods. For example
Item ES1532, seen here is identical to the one I fitted.
Cheers,
JaX
