I had intended to use the AC mounting plate that Dave suggested, but then I noticed these two threaded "ears" sticking up from the block towards the front of the engine. They are very convenient for lifting (maybe that's what they're for) so given the difficulty of getting at the AC unit to remove it I thought I'd have a go with it in place. Luckily it worked - with the front of the car raised a bit, and the front of the engine hanging down (which it did naturally) the AC unit didn't really get in the way at all. This method also means that I can tension the AC belt easily before putting the engine back.
What can I say, guys? I just do things a bit differently. Here's the whole story...
When I first pulled the motor, years back...I used nylon webbing and slung it beneath the cylinder heads in a front to rear direction. Safe, but a pain to get a "level" pull. Then I slug the engine across the car, but I did love that method particulary, either. Then...since the AC compressor is sort of in the way pulling and installing the engine, I came up with the idea of grabbing the engine using the AC bracket as the front lift point...and a chain across the rear.
So true...it is a real pain to get the AC compressor in and out, once the engine is back in the car.
Those eyelets, if you will, on the block...Well, I've just never been comfortable with their "integrity"...and was't sure if they'd support the weight of the entire drivetrain. I do use those points though, when I lift the engine off of the gearbox, as I'm just lifting the weight of the engine.
Hey...You learn something new, everyday! This truly is a great forum.