I know by my post it sounds like I'm inept but it is a very tight area. Dewman, the Haynes picture may be a little misleading because the lower right bolt is down a little behind the water pump housing and you can't go straight in. If one or the other were about 1/4" difference it would probably be enough to use either a universal or go straight in with a socket. Neither my 3/8 drive, 1/2" socket or my 1/4 drive, 1/2" socket will fit between the bolt head and the back of the water pump housing. A previous post by someone said to remove the two hoses from the air filter, and that opened the area up quite a bit. I went down to Advance auto and bought a set of stubby wrenches, $15 or so, both metric and SAE. The 1/2" wrench is about 4 1/4" long and it fit in on the bolt and would move a little at a time. Took about 20 minutes to get that one bolt out. It was all corroded/crusted up so I cleaned both bolt threads up with a die. After cleaning the gasket surface real good I ran a clean 5/16 x 18 bolt in to clean up the thread area. Both bolts should go in a lot better than they came out. I'm sure I have never replaced the thermostat before.............I'd remember this much pain!
So the bolts haven't been out for almost 18 years. It is all ready to go back together but I have some family home for a short while so I'll finish up tomorrow. Thanks for all your help. Now I hope I don't crack the goose neck going back together. I'm wondering if I should put some never seize on the two bolts. Anybody got an opinion on that? Thanks.