That engine bay is so tiny. No room for anything new and shiny! Helped a mate work on his Triton not long ago, there was so much space... but not enough mount points. Struggled to get some after market relays in for his insane headlights / driving lights set up. lol.
The engine bay is massive, the thing is, so is the V8 and all the systems they cram in there. Lol.
The issue you had is a common one to be honest, with many vehicles. I still have to put a diesel fuel-filter into mine, but luckily there's a place for it.