to get the rear mount. westcoast gave me really good info.
on a gsr motor you remove the bracket that is connect to the underneath of the manifold.
after you remove that.
unbolt the t bracket. push it up over the mount a turn it to pop it off.
i did mine in the car with the engine. wasn't bad at all!
i don't think the b16's have a manifold bracket, so you probably won't need to remove anything.
the power steering lines and some pipes were in the way but i moved 'em easily.
what kinda of motor mounts inserts (or mounts) did you get?