Megan Racing spring, ask Codelicious about that. He says they ride ok, personally, I'd go with Tanabe because they're made in Japan. It's less of a drop but the quality is there.
Not sure about short shifters around. The only companies I know is Neuspeed and Skunk2. That's something many people never talk about but I will do some research and get back to you on that.
BlueMango had some aftermarket seats from Sparco. She used them for a car show but had to return them. They were plug 'n play.
If you want a NOS kit, we'll have to start a thread, get enough people to begin a group buy. ZEX makes a universal 4 cyl nitrous system, take a look into it.
I'll add your name to the list of members interested in a Turbokit for the V.