They look like the ones I sell.
http://www.lambrettaspareparts.com/page3.htm ... item B228
Also got the PX style too ... item B212 .... but I don't think they suit the S2 as much as the Rally style.
They always need some fettling, I fitted a PX style one on a GP, it was miles out to begin with but a couple of hours with tin snips and files and it was spot on. Good tip is to completely mask your leggies then place the toolbox where you want it to be and then trace around it with a marker pen so that each time you remove it then retry it you're always putting it back in the same spot.