from what I've heard about them, they are a direct replacement for the vx220 cast manifold
the vx220 cast manifold is the standard z22se item, so should just bolt on 😃
the 4-2-1 item was a pig to fit, I had to move the engine forward by 200mm just to squeeze the 4-2 section in
plus I had to move the bulkhead wiring looms, clutch pipe, aircon pipe and remove the bulkhead loom box
