Nothing in particular, just inspect everything very well especially wiring and connectors for corrosion. Also make sure all of your drains (sunroof and a/c) are installed properly and clear. If you are meticulous about putting the dash back together, it could be better than new. You will fix a lot of squeaks and rattles. And please only use correct trim screws... Ive seen far too many put back together with sheet metal and drywall screws. If you're short on trim screws, you can order the correct ones online.