Theyll fit. Problem is they won't work. My TD100 was a mk1 and it worked off a speedo cable. My van (mk2) works off just 2 plugs, a white one and a yellow one. Full electric. Difference is noticeable when towing, the TD100's mileometer kept going when switched off and towed, vans one didn't
Your best bet is to look for a 96-99 Marea and use its dash
My dad used to drive a Marea TD100, it had the auto style clocks (redline 6k though) and most important, had a digital milometer. You would need to see what the plugs are like but I think it would fit and work