Suspension parts: 2003 Boxster S

[KRAM36]

I had some clanking noise coming from the rear of the car, so I got under it to see if I could find anything. I found some loose shields, but what got my attention was the tire wear. The inside of both rear tires are worn a lot more the the outside. Matter of fact I see some steel showing through on the driver's side tire. So I need to look into some suspension work and new tires.

Where would I find the best diagrams on the suspension parts for both rear and front? Recommended places to buy from? Possible suspension kits also, but I really don't want to lower the rear end any, some lowering on the front would be ok.

I'm in the US. Thanks!