How to build a street legal motor with 671 blower?

To build a street-legal motor with a 671 blower, start with a suitable engine that meets local emissions regulations, often a small-block V8. Ensure you use a compatible intake manifold designed for the 671 blower and select appropriate carburetors that comply with street legal requirements. Incorporate exhaust systems that meet noise and emission standards, and consider tuning the engine for optimal performance while adhering to legal limits. Always check local laws regarding modifications to ensure compliance with street legality.