jet question

hi every body iread alot about rejetting for pod filters-iunderstand that the main jets need to be bigger but i really dont know the size to order[79 kz650-b]can some body help me out?-also ipesume the air box gets removed entirly-what happens to the pipe that goes from the filter to the engine at the front of the bike?[in the carb cleaning stage right nowit would be nice to change the jets now while carbs are off thanksw again [great site kudos to everybody]....irish mike

If you check the filebase under KZ info at the top of the page, there is some very basic info on jetting, that will give you a reference point to start with.