Sierra 4x4 stuff s basically the same as Escos stuff.... and in reality no better for drift use even though sme say it is. I've tried plenty set ups and found that ditching the ARB and going to compression struts made the biggest improvement.
Basically do everything you an to get more castor up front, and to a slightly lesser importance camber as well. So compression struts and adjustable top mounts are the way to go.
Some 4x4 hubs can be redrilled for more steering lock, but you only need that once you've got really good with standard lock. No hubs make enough of a difference geometry wise to be worthwhile choosing for that reason alone.
cheers for the info, like i say its not going to be a drift car i want to get my moneys worth out of it so i want to use it for everything so i want to make sure i have the ability to adjust when i need it.
i have adjustable top mounts i just have to get the strengthening plates and get them welded up.
i also have compression struts so i have been thinking about coing compression strut and wrc roll bar which could always be removed but at least its there then.
so as for the rear beam im best of just getting a 2wd cosworth rear end complete so i dont have to mess about.