I believe removing the crank pulley should only require removal of the center bolt then pull the pulley straight off. You might need an impact gun to get the bolt off, and/or a puller to get the pulley off, if either are stuck from rust. If no impact gun is available, try locking the flywheel by making a small bracket to wedge between the ring-gear teeth or clutch bolts and the block (see images below), then use a long bar on the socket or wrench for the bolt. The puller is a standard 2 or 3 jaw "screw" drive type.
Are you switching pulleys between the engines, or just need to remove it to get the belt on the same engine? I'm guessing it is the first of those, but if its the second, then it would be easier to remove the idler pulley.
As I understand, the 1300 engine is interference, the 1500 is not, and I don't know about the 1600...sorry.
To hold the crankshaft from turning, lock the flywheel in place with something like:
To pull the pulley use a puller like:
CAUTION: this can make a lot of force that can break teeth off the flywheel, bend or break the pulley, or injure you. Of those three only the flywheel and pulley won't heal themselves.