I have the X1/9 nests with the Wipac Quadoptics fitted. Mine have the sidelight option as my headlights are always up. Straight swap. If I need extra light then there's the four Megaluxes in the pod....

If you can find a Fiat X1/9 headlight in RHD format and good condition that's the one to go for. It may be possible to find a pair in not so good condition and have the reflectors remade/resilvered if originality is an issue/concern. I may have one in my spares box that you're welcome to. Drop me a PM if that's any help and I'll post it off to you.

Guy