Where can I get prop airplanes or jet engine airplanes that are very high quality have superb graphics have the original sounds and panels for that airplane for FS2004 for freeware and if you know of any payware give me a link of that also.
Very few freeware models come with customised panels, great sounds as well as effects and textures, but they can all be found separately using https://flyawaysimulation.com/downloads.html www.avsim.com and www.flightsim.com
Models of jets are particularly good from...
Panels, effects, sounds and other textures can be found at Avsim.
As for payware, there are countless developers for extremely high quality aircraft. If you suggest a few aircraft, I'm sure people will be able to suggest the best
http://library.avsim.net/esearch.php?DLID=87241&CatID=fs2004ac - B17g, smooth gauges
http://library.avsim.net/search.php?SearchTerm=bill+lyons&CatID=fs2004ac&Go=Search - Bill Lyons
http://www.dmflightsim.co.uk/ - david maltby
http://flightsimonline.com - Milton Shupe
http://www.btinternet.com/~rick.piper/ - rick piper
http://samdimdesign.free.fr/ - Samdim Design