I have a D15B7 engine, and I was trying to replace all exhaust gaskets to fix a leak/loud engine. But, the exhaust manifold stud broke going to the exhaust pipe. I managed to get the header off, and even if I drill out the broken stud, I would only have 2 left, and I need 3 or I'll still have a leak/loose pipe

Do I buy these? and put in its place?

https://www.ebay.com/itm/31376044778...3ABFBMtrj84vZi

could I also go to the junkyard tomorrow and pick a non-rusted stud from a D engine and use that instead too?