What diameter is the R&D steering nozzle and is it true round? There just isn't a lot of explanation/detail on their site. Is this a worth while purchase or just blow it off. I am running an 85mm 3* exit nozzle.

Also, Is the R&D anti cavitation cone any good? The price is right. I can't really see spending $300 on a lucky 13 cone with my current mods.

I race and rec ride my fzr.