HEI distributor on 400 big block in 1974 Dodge Dart Sport

Mallory has two versions of a coil for the HEI set-up.
The street version is good for up to 5,500 RPMs.
The street/strip version works best from 4,000 to 7,000 RPMs
It is a large round coil similar to the Accel 'Super Coil'.