Intake/exhaust manifold nut trouble

I think he's just got a stock 1bbl intake and exhaust manifold. It just seems odd to me that the choke pocket and the intake to exhaust port would be that close to each other to where you couldn't get a straight extension in there. The only thing I can think is maybe there's excess casting on the choke pocket that's blocking the path?
Agree that the OP has a stock intake/exhaust setup. I was mentioning the potential clearance issues with aftermarket manifolds. After messing with the Clifford and Dutra’s I marked up the tight areas and ground in additional clearance that was still needed after thinning out the wall on the 1/4 drive socket.