Carburetor, MSD, Holley Sniper EFI questions

"Is it better?"

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

Not necessarily I'm big on using a GM HEI module, and many others on here have as well

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

I sure think so, helps prevent boiling/ vapor lock problems. If you go EFI you will most certainly need a return. I believe ?? the Sniper is set up for that

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

Yes but if it works now, you can just go ahead and run it with something such as Sniper


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?

On this page:

Sniper EFI Installation Guide - Holley Blog

they are referring to alpha pin designations ABC, not numerical