For those of you who might like to try your hand at scratch building a Little Joe II model rocket in whatever scale, there was a good set of scale drawings published in the September, 1969 issue of Model Rocketry Magazine.
The plans can be found starting on page 44 in the Model Rocketeer section.
This issue of MRm can be found on Ninfinger. Here's the link:
http://www.ninfinger.org/rockets/ModelRocketry/Model_Rocketry_v01n11_09-69.pdf