[elevationHIGH]

I live in the glorious state of California, where the smog laws laugh in the faces of those looking to better the cars. . .

So, my question is:

If I have the ability to buy a Eurospec 951 Complete motor or a US Spec 951 Complete motor, which would be safer in Cali? How much modifications will the euro take to make legal here?

Both have about the similiar mileage.

Thanks,
Nic