how to Implement a High Pass Filter in my setup

I hope you aren't feeding the sub from a high pass filter! :)

I hope you mean that you send one through a high pass filter to your amp, and the other goes to your sub.

i have two svs pb13 ultra subwoofers, so if i split the signal at the pre amp , let's say i have only 1 port. 

can i use those a pair of those Yadaptors, run one into the HPF which then goes into the power amp. 
then the other port on the yadaptor, can that go into my sub and can i daisy chain my other sub off the first one?

do i then just set the cross over on the sub ?

do i then just set the cross over on the sub ?

Yes. It may help you to think of a crossover as having two components which are independent.  A high pass component, allowing high frequencies, and a low pass, allowing bass.  In this case they won't exist in the same device, but will work just the same.

Would the hsu Hpf work fine for me? It says I only have to select the two cross over frequencies I want it configured with does not ask me to select impedance .
Also I tried to read the manual for the sub but couldn’t find clear instructions on daisy chain can these subs definitely be daisy chained ?

Also I am still searching for the right pre amp / amp combo as well as looking at stereo integrated amps that have pre out / main in like the Nad c375bee or the wyred 4 sound sti500 that allow you to loop out and back in. With these ones can I put the yadaptors on and do the same thing and send one signals from hpf back into the amp and the other into the sub?

If you pre out and main in on an integrated amp you can do that. Why do you want to daisy chain?