Anyone know where i can buy a Binary Seat Car lowering?

idk if thats the right name for that but

i saw one of the xD they can lower there seats...

but my xD can only go slide back and fort
but can't lower it any one have idea where to get it the bracket.

or i should get the whole seats?

 

Did you ever find out how to lower your seats?
Am 6 feet tall and i find them just a tad too high. Lowering them a couple of inches would be fantastic