1964 Dart Owner - In Over My Head

So, I'm an idiot..... (Now that, we've established that let me tell you why.)

I ordered in the parts to fix my fuel leak and the leak at the manifold as well as to redo the valve cover gasket when I fine tune the rocker arms. I thought, I'd get a jump start on my weekend worth of work this evening and started undoing the bolts holding the manifold to the block. Snapped 4 bolts.... :(

I didn't even think to have ordered bolts or what not to fix this issue. Let alone, I've never dealt with snapped off bolts in something like an engine block. HELP!