I had the Morrette in my old RST.
There are 2 types of twin lamp conversion available, the full headlamp and indicator conversion and the conversion that replaces only the lamp itself an leaves the original indicator in place.
The morrette one looks the best as the inner and outer lamps are the same size. The indicator can be mounted in the bumper or you can drill a hole in the outer lamp and silicone the bulb in there.
Only problem is on a night time when your lights are on it's difficult to see.
Also to fit the morrette's you have to cut some of your front panel away to make them fit, loosing the option to re fit the original units back in.
The other option looks pish, the inner lamp is smaller than the outer and just looks wrong.
Hope that makes sense!