Youtube user AuToMaNiAk005 has posted a HEX edit solution video to customise the Sega Rally 2 Demo exe (can be used on the full game). The fix/video also includes a guide to reposition the UI aspects.
https://www.youtube.com/watch?v=tANkI9S_uHYUnfortunately the fix is vert- at the moment, until someone can find a solution to amend the fov or camera distance from the vehicle. I don't have much experience memory or hex hacking, so I haven't been able to find a solution yet. Other than that this fix works perfect.