Hi, restoring a 76 Trans Am 400/auto. Having a difficult time finding the right pressure line for the power steering. I purchased one some time ago from PY or Classic (can't remember which), then once recently at a parts store. Both didn't look like the original unit, the end that connects to the pump does not match, the opposite end does. I'm pretty sure the engine and components are factory as I've owned this car since 1985. Any ideas why I'm having such a difficult time with this?