yes.....
the only thing you can't interchange on VTR's is a mk2/mk1 manifold wont fit mk1/mk2 down pipe. I.E, if you have a mk1 vtr and you put a mk2 manifold on it, you must also fit a mk2 downpipe as your 4 studs on your mk2 mani will match the 4 studs on your mk2 downpipe and vice versa, mk1 manis/downpipes are 3 stud.
so the short answer is yes it will fit. center pipe is irrelevant, any centre pipe will fit any saxo/106 no matter what, as they all fit via 48mm clamps.