Need exhaust help

[Sim6]

So I'm trying to button up my exhaust. I would love to put headers on it but the budget won't allow it. I'm afraid I have two different exhaust manifolds because they take different flange types. It's not the angles but the surfaces. I went to the pick and pull this morning and only found one 80's truck that had exhaust but would have required a couple of hours to clear the vegetation and get the truck off the ground. So I opted to explore other options

Can anyone tell me if my manifolds are matching? And where to get flanges to bolt up to them? I've checked eBay, Napa and Midas with no luck.