I read somewhere that the size of a gorilla penis is about the size of a cigarette, however, I do not have first hand knowledge of that fact. Therefore it would appear that those modelers who strive for accuracy in this arena would not have to devote much time to it, and those who would find a need for such a thing would surely be disappointed. BTW I did find a web-site that confirmed the size theory (in fact it said that the average gorilla penis is 2 inches). Isn't the internet wonderful.. Hmm let's see.. if King Kong was 30 feet tall that means that.....