I'm currently running a HEI distributor installed by the previous owner, should I just toss it and go with this?
The entire idea of 'Jeeping' is working with what you have!
Since you have an HEI now, work WITH it...
If you decide you want to increase your spark energy by 500% or more, then consider going back to a stock type Jeep/Motorcraft distributor and adding a CDI module.
The Things I would do with a HEI or HEI clone immedately is...
1. Switch to a PREMIUM cap with REAL BRASS TERMINALS,
Not 'Brass Washed' aluminum terminals.
(The latest trick of the 'Importers')
Make sure it's some 'Color' and NOT BLACK!
Black caps are usually conductive and cause problems!
2. Make sure the coil GROUNDING STRAP is in place in the distributor cap coil well!
Virtually all of the 'Clones' and a lot of the 'Rebuilds' don't have the ground strap anymore, and it is NECESSARY!
3. Make sure you have the correct SCREWS for the coil you are using!
There were TWO coils used, and one has longer screws,
and If you use it with the 'Small' coil, the screws will crack the cap, stick out INSIDE the distributor cap, and make great grounds for your spark energy!
4. Use a PREMIUM center button in the distirbutor cap.
Most come with hard graphite or worse yet, compressed carbon black buttons which spread conductive dust EVERYWHERE inside the distributor cap causing cross fires!
5. Use a PREMIUM silicone seal between cap and coil!
DO NOT USE BLACK!
The black ones are normally RUBBER, not Silicone, and they are usually colored with Carbon Black, the same conductive substance used to color the cheap caps.
6. Use a PREMIUM ROTOR and change it often!
At least once a year!
If you start seeing a bunch of carbon building up around the center button terminal on the rotor,
It's time to change center buttons and rotors!