I feel that since Chevy is coming out with the extended cab version of the SS truck they will probably have the reg cab by 2004. Hence the L will not see significant changes until 2005. i really do not think you will see a 2004 and if you do see a L that year I do not think it will be any different than 03. Kinda like the lag between Gen 1 and Gen 2. Now I am going back to look into my Crystal Ball some more. just kidding and again take all this with a grain of salt. the salt will probably be worth more.