So, in lieu of the disappearing Mallory, I do actually have a brand new Holley Blue pump which I can use. However, from what I've read over the years on the interwebs, the old Holley Blue has a reputation for being noisy and unreliable. I see people trying all sorts of things to isolate them and keep them quiet. Not sure if I'll actually use it or not.
Maybe not getting the 140 was a sign to get an in-tank pump. In my mind, those have to be the quietest since they are a different design altogether as far as pump operation, the pickup is immersed in liquid (generally) and is mostly isolated from the chassis.