<P> Jeep Wrangler Unlimited may refer to: </P> <Ul> <Li> 4 - Door Jeep Wrangler (JKU) (produced 2007--present) </Li> <Li> 2 - Door long wheelbase Jeep Wrangler (TJ) (produced 2004--2006) or the jeep wrangler (TJ) nighthawk </Li> </Ul> <Li> 4 - Door Jeep Wrangler (JKU) (produced 2007--present) </Li> <Li> 2 - Door long wheelbase Jeep Wrangler (TJ) (produced 2004--2006) or the jeep wrangler (TJ) nighthawk </Li>

When did jeep introduce the 4 door wrangler