OEM MK2 16v will fit perfect, all you need to do is have a lambda bung welded into downpipe if you plan to run it on ABF managment. Or swap the downpipe for a MK2/Corrado G60 item, plus cat or a cat bypass. Bolts right to std 16v manifold and front silencer and has lambda bung already in place.
P.S. ABF manifold is the same as a MK2 16v one, and also Corrado/Passat 9a manifold will also work
