sakatsu lenses + 2001 tamiya impreza wrc

sakatsu lenses + 2001 tamiya impreza wrc
I was looking to swap out the kit supplied lenses for some sakatsu ones. My question is simple, what size lense is needed for the rally head lamps? 2mm, 3mm, 4mm ? Anybody who has done this or knows what size is need would be of great help. Thank you!

I haven't done it since the kit units painted correctly look perfect to me.

That said, you would need a 3.5mm diameter lens, although I am not sure how correct it will look, it is worth trying. :)

Thanks Ray. That was quick!