Everyone keeps saying its nothing but a pain to get a European car into the US, but whats the deal with the "substantially similar US vehicle list" that NHTSA has. Doesnt that make it a bunch easier to just ship it and then have it pass EPA reg.'s. I should think a real restrictive Cat would solve the problem then just take it off after it passes. Or maybe i dont understand the list, does it still require all the ridiculous safety junk, then why would there be a list? I tried asking DOT and NHTSA but they referred me back to eachother....