Front lower suspension arms.

We all know these are consumable items on a 155, so whilst looking around for some replacements I stumbled across this site. Oscaro looks pretty good for standard type stuff, but on the suspension page I found something a little curious. Take a look Here

and check out items 45009 & 45006 about halfway down. They seem to be 410mm long, compared with others on the page which are 390mm & 405mm long.
Would they make a noticable difference. And does anyone recognise any of the brandnames on that page, other than Delphi.

Cheers