To answer my own question on my last post above I found this article on a Review of the Frontier on US website:
"The Frontier is, in fact, built on the same chassis as the big Titan, just trimmed down a bit. Overall length of the Frontier Crew Cab I tested was 205.5 inches, and that's with the standard bed. For 2007, you also can get a long-bed version of the Frontier Crew Cab, which totals 219.4 inches in length, about 6 inches shorter than the Titan. If it sounds as if the Frontier is pretty big for a compact pickup, it is, and that certainly has been the trend. The longest Frontier you could get in 1999 was 196.1 inches long, and the most powerful engine was a 170-horsepower V-6"