im considering a truckarm suspension on my regal ive been talking a little with charlie about this and have been woundering what are the up and down sides of this kinda suspension its a big step and a somewhat big expense to get the kit so im just considering if its worth it on stock cars the springs are on the arms themselfs and not on the rearaxel what is the differance of these two performance wize? also the kid gives you a cross member for shock that are angled inwards what are the benefits of this?