Bilstein B6 installed on my '07 SC430

[Stas07]

I'm pretty sure I fouled up when I bought Bilstein B6 struts and had them installed on my 07 Lexus SC430. The shop got them to fit but the front right is making clunking noise when going over speed bumps. It may be the bump stop, still not sure? I called Bilstein and they do not make struts for 07 SC430. I bought them off of eBay and I'm having trouble getting answers from the seller. Will these work on my car? Has anyone successfully installed B6s on their SC430 successfully without having them modified by Bilstein. Any input would be helpful, I'm thinking I should have gone with the Meisterr coilovers.