I replaced most of the visible fasteners in my 98 Trans Am engine bay with chrome-plated fasteners. Here is the list I created, with my sources and part numbers.
98 Trans Am Engine Bay Fastener List
I cannot guarantee 100% accuracy. For example, I edited my list after installation in a few instances where I thought longer or shorter bolts/screws may be appropriate. Most fastener replacements are same class (grade) or stronger than OEM, but there are a few substitutions of lesser class. I am not responsible for any damage or injury caused by use of the fasteners in my list. Also, I have not included any fasteners I used to plug holes in the wheel wells.
This is not an attempt to undercut any sponsors that provide fastener kits. I hope people find it helpful.
Edited 02-24-2010
repaired file link