I managed to find a set of NA2 (97-99) manifolds in good condition. And then realised I had to buy a pair of adaptors to fit to the rest of the OE exhaust system (note: the expensive ones, not the cheap ones that are on sale everywhere, as those are the other way - to allow NA2 owners to fit the a-market exhausts that are designed for NA1 manifolds).

Easy fit (as you'd expect) and as a bonus the car sounds a bit louder and definitely responds a little more willingly to the right pedal.