Seat Belt Question

[lkt1954]

Back a couple of years ago I bought a set of seat belts from Ecklers (they are safetyboy brand). They are the retractable lap and shoulder belts. I'm also adding a 3rd person middle belt.

In the picture is the buckle end that was in the package. I don't see how this is going to work. I would appear to me this buckle end is for bucket seats, not a bench seat (which I have).

Am I correct on the application of the buckle ?
Can I just order an adjustable buckle end for like Summit and it work or do I need to get one from Safetyboy?

Thanks

[lkt1954]

Another question--
On the retractors do they need to run parallel with the door or the back of the cab?
I've watched several videos and have seen them mounted both ways, so I'm not sure which is correct or if it matters.

Thanks