This is how I lifted my 993 engine...I used a load leveller (about $20) so I could balance the engine and some good chain on each end. The front is hooked through the engine mount and the back is hooked through the nice hook Porsche provides just behind the vent cover. On my engine the chain runs very close to the intake plumbing but it does clear. I am not sure about the SC but its likley to have less plumbing...
It helps that I have a 14" steel I beam in my shop to hang this stuff on...but you can use a cherry picker type device. I really don't like the idea of having four people pickup a heavy engine and can slide and move around...it sounds like an accident ready to happen.
To get the engine out I used the same idea and lifter the entire rear of the car off the ground nice and high to clear the body...so I did not have to remove the rear bumper or any baffles. Worked like a charm!
Oh its certainly possible to do without any helpers if you are so inclined...
Cheers,
Mike