... is done. Its a Mcphersonstrut with a lower A-arm made from CromeMoly steel. Brakedisks are mounted directly to the wheels for weight reasons, titan nuts and bolts are used. Weight of knuckle, strut, caliper, disk and wheel less coilspring is about 6900grams (see pic) !!!
CromMoly tubing for chassis, suspension, ... Aluminum for shocks, calipers, wheels, ... Composites for roof, body panels, ... Titanium, stainless for screws, ...
These come from austrian and american suppliers and when you are a lucky like Mexx you can buy titanium stocks at ebay for nuts :-).