It is Jeep Willy's CJ-3b model. Well I have sorta grown up with this cj-3b model. I have always lived in and around Army and I have always seen this jeep closely. Just few years back those jeeps were the common hilly taxi's in the Garhwal Himalaya, well actualy there were more Mahindra's than CJ-3b willy left. In India Mahindra & Mahindra motors had the liscense for cj3b model and they used to sell the exactly same model under their brand name 'Mahindra' without any changes to the original jeep of 63.
So for the sake of my love for the jeep, I am going for more detailed model than I have ever done.
Thanks to smcars.net I got the blueprints which I was looking for.