Update: Initial engine details done. I'll go back and add more after I get the rest done.
Left to do:
1. front intakes
2. detailed guns
3. details on the back nozzle area
4. bottom details
5. greeble, greeble, greeble...
Three engine center sections in place...
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675