ICE_MAN:

I would suggest not using any type of easy connector at ALL. Simply because of vibration and that any type of linkage like ball joints are going to vibrate loose.
If you go with a zbend you will not have to worry about this happening to your airplane.
As far as engines I would suggest any OS as long as it has a high and low end needle valve adjustment screw.
I have started a thread that you maybe interested in and it describes what is needed for field equipment.
http://www.rcwebboard.com/forum/topic.asp?TOPIC_ID=7488
I hope this helps, if you have any questions feel free to send me an email.