No, I don't think so. The flash of my D70 is different from the flash of my D300.
The flashes used to be shorter, I think. They've become longer since the D200.
Oh, and I'd rather not have a built in flash on camera. One time I went to a museum with school, and they did not allow flash photography or video. However, someone else with a video camera switched to photo mode (with no flash control) kept on flashing while taking photos, and the guards looked at ME and reminded me that flash photography is not allowed, as if I took a photo with the popup and then quickly jammed it down. And in some places, they don't even allow you to take pictures because of their fear that your flash will go off (even if you said it won't)! If I use flash, I use my SB-400 anyway, so I would rather NOT have a built in flash.