I'm genuinely really happy to hear you like my mod this much man!
I'll take a look at the reload callouts tomorrow and see if what I can do about it.
Crew sound modding in general is possible, and not particularly difficult, as fair as I am aware. However Arto has expressed it's really quite tedious, so I'm not sure yet if I'm going to go there.
That said, you never know..
As for the engine sounds, you'll see tomorrow