If it hasn't really seen much of what the rust has to offer, you'll likely be okay. And if you use ant-seize putting it back, prolly okay with the hex heads. Since I had a couple strip out, and had the other regular bolts, I didn't bother tracking down the couple of new ones needed.

Where are you in MI? I grew up in the DTW burbs, 13 mile and Southfield, just a hop from Woodward. I can still hear the engines roaring on a Friday night from our front yard. Ah, the good old days...

Big Truck: 00, 3.5, Endeavor, 5-Spd drive line in hand!
Little Truck: 87, 2.6T I/C, MT, LSDs, Tonneau Top
Her Truck: 03, 3.8, 20th Anniv, 65k
Daughter's: 06 Eclipse, Keeping it Mitsu!
FSMs: MitsubishiLinks.com