This is to sum it up and make it easier to find the bits and pieces.
Full credit goes to RadarMan who posted the links and laid out the bait.
For the aircraft : Go to the 'Downloads' section, select FS2004 Military Aircraft and type/paste fa18esh3_138105.zip into the searchbar.
(Sorry, for some strange reason I can't link you directly to the page)
On the same page right underneath you find an update.
For the Maximum Speed Update head over to Avsim ➡ http://library.avsim.net/search.php?SearchTerm=shmach18.zip&CatID=fs2004&Go=Search
I hope this does the trick 😀