The Simmonds units looked very expensive to me. SVC is selling the correct Lucas L794 lenses for less than half that, guaranteed to fit, and the bulbs included. £24 delivered isn't bad.
You could also put them on the back, with coloured bulbs. Personally I prefer the red and orange lenses at the back.
If the £1.35 ones in Paul's post did fit, they swouldn't look quite right - I think they are identical to the ones on a Land Rover.
