Quote Originally Posted by diagnosticator View Post
I'm late to this discussion, but your original post is missing the GT2554R, a dual ball bearing water cooled turbo comparable in size to a K-04, but spools faster, and has better efficiency with an extended top end capability. This turbo is the unit that would be worth consideration and answers the questions you conclude your op with.
If the GT2554R has already been discussed in this thread, please disregard.
I was told depending on the k04 you went with you could get the same results.