Still love my car but......

Everytime I decide on fixing something thats wrong which is pretty much most of my car.....Something goes horribly wrong....I always wanted a 340 Duster and about a year ago I found one pretty cheap with a decent body and matching number engine and trans.....Its been a work in progress ever since....My latest problem is i was leaking a good amount of antifreeze so I thought I had a bad hose which they all felt soft and looked old...Ordered all new hoses,thermistat,temp sending unit. Parts came on Tuesday so me and my son headed to our garage and started removing what was being replaced. The waterneck which the upper radiator hose connects to was in poor condition and I had my son who's only 9 but very into working on the car wire brush the part and he said it still looked horrible. I'm getting to the point of this stiorry so bare with me......He brings me the part and I hold it up to the light and it is actually rusted through....where I live you don't just go to the local parts store for a new one.....Back online to find one to order, also while removing the hoses I saw that the water pump was pretty bad as well so I ordered a new one as well......So today I have nothing going on so I decide to pull the water pump so I'll be ready for assembly when the parts come. All the bolts came out fine except one that ended up breaking.....So I pulled out everything off the front of the engine.....fan,and radiator so I have clear access to the bolt. After I got the water pump off I have 2-2 1/2 inches of the bolt sticking out.....I have tried drenching it with break free and also heat and tried to back it out with vice grips but no go....My latest idea was to thread the bold and try backing it out with a couple of nuts on the end. I got the bolt threaded but don't have the right size nuts which I will be getting.

Now if that doesn't work does anyone have a any suggestions on what to try next?

I really don't wan't to take the timing cover off then while I'm in there I might as well replace the chain as well....this snowball is getting bigger by the minute...