Exhaust leak

Hello y'all. I have a 65 Dart and need some advice. My exhaust manifolds leak even after I replaced the gaskets. I removed them and installed some shorty headers I had for a 318 and the driver's side hits the gear box. I'm having a hard time finding new exhaust manifolds or headers that will fit. The car is lowered about 3 inches so I'm afraid long tubes will have no clearance. I would be ok with re-using the factory manifolds but still need to see how warped they are. Any input is appreciated.

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