Putting in new control valve with 5/16 fitting. Other than changing the pressure hose to the 5/16 inlet, will the other end at the pump be the same. Are all the other hoses the same? Is there a better way to route hoses than by the exhaust manifold?
According to Chockostang hose has a loop in the hose at the back of the pump. But no lower part is close to the manifold.
The loop attaching the PS hose to the shock tower is very important on those.
You can change to the “big block” setup. Bluedot hoses will help get you to the safer setup.