Which Rails and Caddies for DL380 G7?

Hi fellow homelabbers :) I've been fortunate and got the chance to pick up a DL380 G7 for ~280€. Sadly this one is missing 4 SFF HDD Caddies and rails and I'm a little lost what to buy. There are so many slight variations on ebay. some stating the G7 as compatible, some don't. Do you have any Partnumbers of original HP replacements or compatible 3rd party equivalents? Or are there no differences between generations?

Kind regards and thanks for your time.