1) HEI Distributor.

2) Direct Fit For GM Application Utilizing The 4-Pin Ignition Module.

3) The OEM Part Number Is GM08, 850001R, 59107C.

4) 65,000 High Voltage Coil Spark Through 7500 RPM, Upgraded For Racing Application.

5) Compatible With Small Block Chevy 283, 305, 307, 327, 350, And 400, Big Block Chevy 396, 427, And 454.

6) Package Includes: As Shown In Our Pictures.

This Item Doesn't Come With Installation Guides. We Highly Recommend Professional Installation.