Carburetor, MSD, Holley Sniper EFI questions

Kipprc said
I have been trying to quietly learn about carbs, MSD and EFI by reading a lot of old post along with articles written online. I find that I am still left with questions. I still have a carburetor on the car, but I am putting together the parts for an EFI setup. The fuel system is on the way, but I haven't ordered the Holley Sniper yet. The fuel system portion of EFI looks simple enough, but the actual wiring of the 7 pin and 10 pin connectors is throwing me. When I get all the pieces in, I wouldn't be installing this until October or November anyway, unless I find myself with some extra days off. I want to sure I can get the job done in a day.

1. Is MSD 6a just a better form of electronic ignition?

2. Is it better to run MSd 6a along with an EFI setup (leaning towards Holley Sniper)?

3. Is there any benefit to running an electric fuel pump with a return to a carburetor?

4. On the Holley Sniper ECU wiring diagram do the 7 pin and 10 pin go back to the cluster of wires on the firewall?

5. Once installed can all of the old oem chrysler ignition stuff just be removed and trashed?

I'm just a guy with a garage and some tools. I have no formal mechanical training. So please dumb these answers down. I have never owned a car with a carburetor till now. The most I ever had to do with EFI was fumble with fuel rails and replace injectors. This will be a new experience for me. Thanks in advance.

Photos added for reference

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The Sniper instructions will answer some of your questions. The wiring diagrams in the instructions will show you what to do with the 7 pin and 10 pin connectors. Basically you need to hook up to power and ground and then run a wire to your new high pressure electric fuel pump. You'll also need to connect to your ignition system. If you are going to control fans then there are wires for that. There is a tach wire which you may or may not need and a gauge cluster wire which you might not need. If you use a Hyperspark then you use the white wire and remove the yellow wire. It is all very simple once you understand the instructions.

Toss all of the Mopar ignition system in the trash including distributor, coil, ballast resistor, etc. The tricky part for a Mopar install is that you need 12 volts cranking and running so you have to tie IGN 1 and IGN 2 together. Those tied together will send 12 volts to the Sniper and the ignition system.