273 Adjustable Rockers/90 Degree Adapters/18" Clutch fans

Eric Griffith said
Hey Jake,
What are the Oil filter adapters for??
I mean, why would someone need one?
I have a set of 1970 factory HP exhaust manifolds for my 70 Cuda,is that something I would need for the oil filter to clear the exhaust??

The right side manifold on the 68-70 340 exhaust will hit the oil filter without the 90° adapter....