360 Magnum Build w/ V Belt Configuration Question

If you already have an LA style timing cover, water pump, and v-belt pulleys, you can run any intake you want, including the Magnum specific 7577. The straight bypass hose of the intake can still be connected to the LA bypass connection. Some people use different angle fittings at the intake.
LA style power steering should be no problem either.
What is the reason for changing from M1 single plane to a dual plane setup? The M1 single plane is a good intake. Will you be selling or trading the M1 after the swap? Can you post a picture of your current setup from the front showing pulley setup and intake?