Thanks for everone that answered. I found the ones I need. The main reason I asked was because the supertech springs and retainers for the
D16z6 are about $50 cheaper than the isky ones. Just seeing if it was possible to save a buck.
As for the last question I would just get the supertech springs and retainers. There pretty cheap at $280 and I am sure they are better quality than crespo (which I think is some ebay company right?).