exhaust hangers?

are all oem japanese rubber hangers the same?

i would think not. however it would help me out a lot. the oe rubber hangers on my speed blow and i wanted to upgrade to kartboy or something and was just goin to order kartboy subaru exhaust hangers. but i dont know if that would be wise

can anybody specify? or point me in the right direction?

They come in 13mm and 15mm sizes