Chevy 289 Square Port Manifold Flange Lightweight, laser cut from 10mm 304 Stainless Steel. We use these on all our race car and rally car builds. We can also supply pressed steel transitions in either 304 or 321. The 321 although more expensive offers the ultimate in terms of strength and longevity. Please note, the picture shows the flange without transitions, if you want these choose either 304 or 321 from the options list below! For turbo applications the 321 is highly recommended
 
32x42mm Port Size
10mm Thick
Grade 304 Steel
 
Note: This flange is sold as an identical pair, so when purchasing, both will be sold to you!