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I was researching the HEI upgrade when I came across that kit. I would like to add HEI without adding a mess of ugly gizmos and wires to my fender, so I was looking for something a bit sleeker that would do the same thing.
There are lots of ignition systems available, but HEI is enough better than most of them to be worth going for. If you don't like gizmos and wires, you're going to have something of a list of problems to deal with:• Existing electronic ignition box (removed with HEI)
• Existing ballast resister (removed with HEI)
• Existing voltage regulator
• Existing wiper motor
• Existing bulkhead disconnect
• Existing windshield washer tank and pump
• Existing starter relay
• Existing all the other gizmoes and wires
You could empty out a Mopar electronic ignition box and hide the HEI module in it; that's a thing that's been done, but you'd still want the module over by the distributor, not in the opposite corner of the engine bay.
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I read often about HEI module failures
Poor-quality off-brand modules tend to fail early and often. So do modules of any brand that aren't mounted with proper heat sinking, or that are underfed because no relay. Good quality modules installed and wired up correctly don't tend to fail.