Anyone know Holley Commander 950's? programming?

Re the fuel pump, you should have read my posts first. I originally put mine back there in my C-body (where there is much more room than an A). Now all my EFI pumps are in the engine bay. Works fine, easy access, and stays clean. Don't believe the instructions in the Holley manuals that you must mount in the rear, below the tank. I am a mechanical engineer, so allowed to think for myself. I bet you will hear the fuel pump real well thru that frame rail.