The ports on silver top are the same size but are about 5mm out on height. You can take inserts out of manifold which reduces it to about 2.5mm then you'll need to elongate the manifold holes to allow it to line up. I have a complete st170 inlet here and want to know if it will fit in mk6 escort without hitting the brake bar? It definately wont fit mk4 escort as I already tried that. Anyone know?