i have put in tweeters in two spots. first off, if your tweeters are 1 inch or more, the factory location on the post will not mount up. you need to modify it. is it worth it? yes. the second location to mount the tweeters is to drill a hole above the 6. 5 and mount it. the placement is totally up to you. you are going to have to make a mounting plate for the 6. 5 in the doors. it is a factory 6x9 in the door. if you mount the tweeters in the door, the higher up you can go the better. good luck.
chad nieters