Knurled velocity stacks, these stacks are kind of unique because the mounting collar has a diamond pattern knurled all the way around. They are basically the same as the originals except the diamond pattern on the collar.

All stacks come with screens and set screws.

comes in a SET OF 4

Models: (1969-1976)
             (1977-1978)

This is a built to order item and may take up to a week to ship