Corrado-Database - The ultimate Corrado resource. If you have one and you're not on here then go and register!
53i Styling - Thorsten Rohne's Corrado Resource. Mods, styling, gallery
Xnology.com - Cool laser-cut stuff and the Corrado font
Caddy Shop - The World's No.1 Caddy Community
034 Motorsport - Specialist VW & Audi tuning parts and Standalone Engine Management
WheelsMaster Tire Size Calculator - Very useful wheel & tire size calculator with side-by-side comparison. (US site, so tires, not tyres!)