COST - Lots, however it depends on your ability and how much you can do yourself. Also the quality of the install. I am very particular, done most of the work and my engine conversion was about $5000. Which does not include brakes, body etc.

What I have noticed about CA18 swaps is that although a few of us have done it. No one ever does it the same way. So the problems you face will be different to mine.

Thats what makes Datsun's fun.