Here's some pics of the new striker and the orientation of the new 1-piece spring keeper.
The new 1-piece spring keeper off the striker
The keeper as it fits onto the striker, with the open slot facing UP. I positioned the keeper a little to the rear of the striker head (against which it will actually rest when assembled) so you can see how the front of the keeper will fit up against the rear of the striker - just like how the separate 2-piece keepers are retained.)
The assembled striker, viewed from above, showing how the open slot of the keeper faces UP.
These pics show how the 90-degree angle of the rear of the striker must fit in the striker guide, BTW.
Hope this helps.