Having picked up a 1/48 Modelsvit Yak-18 kit on sale, having read about use in Korea as a nuisance night bomber, i was going to ask about bomb rack, when google turn up some information my initial searches did not
Including photos of one in the US, part of the Air and Space museum collection

from
http://airandspace.si.edu/collections/artifact.cfm?object=nasm_A19610014000seems to be on loan to the USAF museum

No real history given, whopps,not paying attention, a very interesting history!
The U.S. Air Force Museum, Wright-Patterson AFB, Ohio, donated this Yak-18 to the National Air and Space Museum on July 13, 1960. The aircraft bears construction number 59, but no production or early service details are known. It participated in a 16-17 June 1953 "Bedcheck Charlie" night raid on Inchon, Korea, which resulted in the destruction of a 5-million-gallon gasoline dump. In late 1954, two North Korean pilots defected to South Korea aboard this Yak-18. The Air Force displayed the aircraft for several months before the U.S. Air Technical Intelligence Center at Wright-Patterson acquired it in August 1955. Assigned to ATIC's 1125th Field Activities Group, it was given tail number 47-715, painted with U.S. Army insignia, and designated "T-10G." The ATIC conducted flight tests from October 1955 to July 1957, and the Yak accumulated 110 flight hours. ATIC transferred it to the U. S. Air Force Museum in Dayton, and the museum displayed it with North Korean markings before transferring the airplane to NASM on 8 June 1960.
from this thread
http://forum.largescaleplanes.com/index.php?showtopic=55179so..looks this is the defector plane?
this image, i assume post Korean war is interesting, note the odd angle on the star.

and this in the US while being tested.

any idea what the bombracks might be? I can see asking on Hyperscale might turn up some info with it's large US readership.
I'm wondering if the colour is original.

seems there is one in War Memorial Museum - Seoul as well.
an overall dull colour makes more sense for night use,so I presume the above is a museum repaint.
http://spioenkop.blogspot.co.uk/2014/03/north-korea-forgotten-aircraft-yak-18cj.htmlThe kit has multiple marking options, but no Korean option

there is a Yak-18 facebook page
https://www.facebook.com/yak18Any additional information would be of interest, hope the above is to other readers.
cheers
T