What strap kit do I need?

[gpod]

I am looking at getting a Justice or possibly a Liberty for my 2016 (5th generation) Toyota 4 runner. Can anyone tell me what strap kit would work?
This is what I'm working with:

 

[Pete L.]

Have you considered a luggage rack kit. It would save you drilling
into that nice new truck

 

[gpod]

I have considered it, but I don't like the look of having a full size bar behind the B post and really can't get past that.

 

[gpod]

I emailed Whelen and they informed me the only way is to permanently mount it. This can't be right, can it?

 

[Pete L.]

If you can figure out how your luggage rack attaches in that
track, you might be able to attach your lightbar feet the same way.
Just a thought.