I have a greddy evo 2 on my evo8 and I am very happy with it. If you want to hear it let me know…
Plus side = nice cruising sound, no droning, loud when your on it. Sounds good.
Fitment = perfect (evo 2 the most of the muffler is on the top, hence it does not look like an aftermarket exhaust or a ricey muffler).
Down side = most greddys neck down about 1/4 before the cat. (well at least on the evo’s it does). But this neck down is very minimal. I measured 2 3/4" ID at the neck down and the remaining is 3". Just some of my experience with greddy. Overall I like it. It works well for my needs. I cant have a loud exhaust cause of customers/clients.
Jeller