72 duster resto
I'd stay with manual steering myself. The swap I mentioned earlier had power steering on the 225 so I left it in for the 360... don't remember what the exhaust manifolds were off of, but I had a lot of issues with those hitting the PS Gearbox. Ended up using a turnbuckle to make a torque strap to hold the motor still and doing some grinding to get rid of the thunking noise. This swap had used the S6-360 Schumacher mounts... might not turn out to be an issue for yours depending on exhaust, but if you're happy with manual I'd leave it alone.
I'm actually swapping mine to manual from power now while putting on the S/C.