Bolt size and accessory bracket

[775stepside]

Can someone tell me or guide me to a link where I can get the sizes/threads of the bolts that hold the bracket for the accessory stuff? The bracket that goes around the timing cover that holds the alt, power steering and ac, and tensioner? I took off all the bolts and put them in a bucket and for some reason there is only a couple that go back on. Should I just grab the ones that fit and get new ones? It's the last thing I need before I finished with the truck