Maybe someone else has different info, but I don't see how you could get a girdle in the MII specific 302 oilpan.
If you are planning on drag racing rather than road racing, I'd recommend just raising the engine a bit and using a standard 302 oilpan with the girdle. Of course you'll need to adjust your pinion angle a bit to compenstate for the nose up engine/trans angle.
If you are road racing you might could lower the rack an inch and use bump steer eliminators to restore your steering arm/lower control arm geometry. I've never heard of anyone doing that, but it should work.