Replying to The true length of skis

Alright i and i guess many other skiers would like to know the true length of skis before we purchase them over the internet. Since i live many miles from a ski shop i dont have the ability to measure up the skis. As me being tall 6'4" i need all the length i can get. I know i need something in a 180+ length but many companies measure their skis by the length of the material before they are pressed so the length after the process will be shorter. I do know that companies measure long or true such as k2 and on3p. I would just like to know the specifics of other companies before other skiers like myself buy a ski that doesnt measure up. So if this means taking out your punx and a tape measure and getting the true tip to tail length please do. Gracias