Left to Right, 1). For use with 351W (9.5") block and 351C/Boss 302 heads. 2). For use with 289/302 (8.2") block and 351C/Boss 302 heads. 3). For use with 289/302 (8.2") block and standard 289/302 heads.
These are pics (2) B&A Performance Intakes, and (1) Edelbrock Intake. The B&