White wall tire's that look like...

Hi, I was wondering where I might be able to obtain some white wall tires that look like this. I've got some that are similar but the rims won't fit...so I will either have to modify, or just find the correct ones. Any ideas? 

These are firestone brand.

 

Source: http://cs.scaleautomag.com/SCACS/forums/thread/995549.aspx

Umberto Maglioli Jan Magnussen Guy Mairesse