Hey I haven't gotten any coffee yet this morning so I'm still in a grouchy mood, but...
What the hell Shawn why would you copy and paste the same post half a dozen times all over the forum?!?!?!
Thats not how forums work man, when we log in most of us click on "active topics" (or "new posts") so we are going to see a thread you make no matter where you post it, you don't need to copy and past the same things all over the place to get people to see it, all that does is makes a list of 6 separate threads in my "active topics" list and now even if we collect some of the information you seek its going to be splintered all over the place depending on who replies to which thread.
Your second spanking is for not using the search feature, because we already have about a hundred "waaaaahhh why aren't there a pile of useless aftermarket products that I can slap on my econo box
Blerg. I need my coffee.
Anyways, the real answer to your question is that there is not enough potential money in the versa aftermarket scene to entice companies to come spend the R&D to build anything. People who buy Versa's are budget commuters, primarily. The other thing is that the engineers left no low-hanging fruit, especially if you have the 5-speed sedan. They are already squeezing about as much reasonable reliable horsepower you can possibly get out of so little displacement, and the transmission already has acceleration-oriented gearing (if only to keep it from getting too good
of gas mileage). There is no appreciable power to be gained from basic bolt-ons, if anything there is only power to be lost because you think some dingbat who screws and glues some PVC together with a couple of elbows and tells you its a "high flow arctic air intake" somehow knows better than the team of engineers paid thousands of dollars to develop the stock intake.
As far as suspension goes I cannot understand how anyone can be expecting more out of the car's stock suspension. It works great. It is soft where it needs to be and stiff on the corners. Done deal.
I understand wanting to customize a car and you can do that, go get yourself some gangsta rims and an aftermarket radio with a couple of "subs" in the back, slap some stickers on and then your car is officially "special".
Sheesh, I really gotta go get that coffee....