Aftermarket EFI on a Magnum- your experience??

Photo on my engine which is a 340:
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I'm not sure if you can even get the M1 intakes anymore, but you could always get the Hughes airgap and do a setup like this. I like this universal Holley 1000 cfm throttle body since the IAT sensor is also part of the throttle body

Great looking set up. I am going to do the same thing to my 5.9 magnum engine, but I am going to also use the GM LS computer. I have to swap teo of the injectors and ignition coils. Ls firing order is diffrent and get it swapped in the computer and retuned.