Fuel Pump Swap

I am not sure, as I run electric pumps. But I think the big block (Hemi included) pumps, themselves, are the same, but the arm is slightly different, and needs to be swaped out. I tried to find the "for sure" info, but do not have time to locate it, right now. Just be aware of this possibility, and don't just install the Hemi pump without checking this.