Yeah, you'll want to make sure your sway bar end links are tight, actually all bolts, alignment is relatively close to spec, and check any bushings you can get to. As with any racing, I'd suggest checking all fluids, bring any tools you think you might need to make a temporary repair. Damage is not likely but it's best to be prepared.
The whole checking bolts, bushings, and alignment isn't exactly necessary. At my last one, I had a broken rear endlink bolt, broken exhaust flange, a damaged control arm bushing, and a blown passenger side front shock, and a slight leak in my power steering rack. That was all before the rally... Only problem I had after the rally aside from the above was that I rolled the bead on one of my tires.
I've replaced ALL my rubber bushings now and the car feels alot tighter, we'll see how the car handles having 2 drivers tomorrow. I'm a little low on oil but I'll have a chance to add some before the race thankfully.
VF34'd Corvette Killer aka Doug