Doing a bit of suspension freshening on my R8, replacing the heater hose the previous owner (idiot) had put instead of bushings on my sway bars... I was going to just switch out my R8's sway bar with the one from my Gordini.

Oddly, I found the Gordini bar is of a smaller diameter than the plain R8. Does anyone have an explanation for this? Is the metal different? Which is superior and why?

Anyone have a good source for replacement bushings or measurements for the originals... maybe know of a more common car that uses the same size?