I'm no Chinook expert... Oh wait, I am.... (joking)
OK, first, the containers on the side are actually the fuel tanks.
The best place I can think of right off the top of my head for you to have a look-see is www.airliners.net. Just do a photo search for CH-47. The following links are for some pics from that site.
http://www.airliners.net/open.file/547903/L/
http://www.airliners.net/open.file/546035/L/
http://www.airliners.net/open.file/403948/L/
I don't remember the rotor blades on the commercial Chinook being larger than the current blades. If I remember correctly, the blade chord back then was 32", while the current chord is 36". I'm not sure how much of a difference that would make in the scale that you are doing.
I've got to get out of here, but I will try to have some more info for you, if Hooker06 or Old Hooker dont post something here before noon tomorrow.
Chris Ish, a CH-47 guy for longer than he thought he ever would be...