[ZedEquis79]

Here's a good site that shows many different years of Z's, and what RD, head, block and pistons they had. It does go on to talk about the 200SX RD as well. I found it useful and informative, although i think a lot of the info came from here, at zcar.com. Props to whoever compiled all the info.

http://geocities.com/zgarage2001/engine.html