Originally Posted by captain E34
Well it wont stop me from loooking around haha, it woukd be coool to offer that to the owners of e28, e30, and e34's!!
It is a neat idea. The only other thing that crosses my mind a potential issue is that by threading the inside of the tube (while the outside is threaded) the amount of material between the roots of the threads might get too thin. For example, if the wall thickness of the tube is 3mm and both threads are cutting roughly 1.5mm deep you'll be in trouble.