Hi Tommy, I'm glad to assist you. The Northstar engine has a unique bolt pattern and port design, so it may be hard to find a universal intake manifold that will fit without modification. It can be a time-consuming, complex process, and may require special tools and expertise to make a universal type of intake manifold fit the Northstar 4.6L engine. I hope this helps. For a direct-fit intake manifold, please provide the complete information of your vehicle (year, make, model, submodel, and engine size).