A few months ago George Kandylakis posted a link to the French Cervia website http://www.peanut-scale.fr/a-les-cahiers-du-cervia.html its really good!
There is a header with 'Documentation' that will lead you to the Nesmith Cougar...
And in the 'Plans' pulldown you will find a very detailed peanut version by Ulises Alvarez
That is a very nice Cougar plan-- Too bad the left edge got "clipped off" in the scan. Would not be a problem building the model, but it would be nice to have a complete image, just for collectors' sake...
The wienerdog link has an interesting image: The new, combined landing gear and engine mount assembly of that Cougar is similar to a Tailwind's. The original Cougar landing gear mounting (attached directly to the lower fuselage structure) was a very poor design, and most built to plan failed. The torsional loads twisted/broke the fuselage tubing where the legs attached.