I just installed mine, also a 2017 Nismo.
Yeah, it's not the most accurate fitment. I struggled with getting the heights matched. Left side sticks up a bit higher. 2 shims on left upper hangar, and none on R/H.
As for them sticking out. I basically placed the pipe flush with the inside lip of Tip. ( as you have shown) They stick out nice for me. I don't think you're goinf to get better than that.
VERY LOUD now!
