Heads up for those of you who already didn't know, but Tomei is planning on releasing a full titanium exhaust in 2019.
I had a Tomei full titanium on my GTR and was really happy with the quality and how light it was. I will be getting one for the MKIV and will do a thorough review.
tomei2 by Jeff Willis, on Flickr
tomei1 by Jeff Willis, on Flickr