Works and fits perfectly, but you can't use the JConcepts front spoiler with the Losi shocks, especially not when they are set on the inside position on the front shocktower. You'll have to make one like these:
http://picasaweb.google.be/bnkoffroa...74417662950754
Some say Losi shocks take some 'sharpness' out of the car and make it a bit smoother, but haven't tested the difference myself. I use them on my B4 and S2 and they work great.