Okay so let me just start off with saying ive never pulled heads before, didnt realize there was coolant in the passage for the lower head bolts.

Headers were out and i unbolted the lower head bolt closest to the firewall, coolant comes pooouring out and into my downtube.

I just had a mandrel bent 3" system done, i would assume its all stainless. I have no real way of getting the coolant out of the pipe, should i be freaking out? if i do nothing itll stay in there for about 4 more weeks. Oh and the entire system is welded

 

It shouldn't be a problem. Expect a bit more steam and sweet aroma when you finally start the engine. It won't last very long unless more coolant is leaking in.