1) http://www.jspec.com Well, there's two out of three 180SX bumpers that are available in the US, the rectangular turn signals and the teardrop version. The 3rd generation JDM bumpers are the only ones not available in the US. It has small square driving lights and little amber/orange integrated turn signals on the small airdam below it.
http://www.jspec.com/180sxlights.html
Then again, you can always get the Japanese turn signals, which are half amber and half clear.
http://www.jspec.com/jdm180lights.html
There's more stuff here, just look around. <a href="http://www.jspec.com/nissan.html
2)" target="_blank">http://www.jspec.com/nissan.html
2)</a> 180SX taillights from the 96+ 180SX's. They're circle-looking units that replaces both taillights, the rear center panel (you'll need new trunk keys, which SHOULD come with the set when you get it). They cost around $500 a set. If you look at the car from the side, the circles "sorta" buldge out just a bit. Then there's the 180SX Type X wing as well. You can also replace the side windows that says "240SX" with "180SX". For that, you'll have to replace that particular part of the window, not just the badge, but the entire window piece. There's a shop where you can get it, but it forgot the URL. Interior, there isn't much of a difference besides the gauge cluster.
I think that's pretty much it. You live in So Cal, so a lotta stuff is gonna be available there.