Originally posted by neonova75:
so the spa manifold is better for the t4 turbo
It is made to fit the standard T3 4 bolt turbo, the GN turbos are a T3 but have a unique 3 bolt inlet. The T4 is a much bigger inlet. As was stated in another post you can look for the turbos off of the Syclone and Typhoons as another chap alternative if your going to use the SPA manifold.
Here is the T3 and T4 gaskets for comparison.
