I recently bought a LH manifold for my daughter's Mustang and it was a Dorman and was very well built. The gasket that came with it was cheap so I used a Felpro. The install was easy as it fit perfectly.
__________________ But the wisdom that is from above is first pure, then peaceable, gentle, and easy to be intreated, full of mercy and good fruits, without partiality, and without hypocrisy. James 3:17 (KJV)