The post on the X6 are just 2 of the rear post but lowered a touch.
The cell slots are filled with some stuff called Permabond that I borrowed from work
There is some weight under the speedo. Also as Darren says the 2 black lumps are real lead that I have heatshrunk, it weighs more than the stick on weights so I can have more weight but in a smaller physical size. They are in 2 lumps so I can remove them if I want to alter the cars handling. Just something I wanted to try out really in case I ever wanted to run the front of the car lighter, or in effect more weight bias to the rear. They aren't stuck in in the picture, normally they are servo taped but I just put them in for the pic.
And the car jumps soo much better with the speedo in the middle...not that it was ever bad before
