My car needs to be shamelessly Ecto-riced. It's a 1994 Dodge Shadow, and looks exactly like this -

- only it's rusty as hell, has no wheel covers, and is pretty much a pile of moving crap. The engine, however, was recently rebuilt by close friends of the family before coming into my posession just recently. I'm pretty much planning to transfer the roof rack to whatever my next car is, using my current car as a test bed.
It needs a name, and it needs suggestions. Obviously I'm not going for a serious “HOLY CRAP THAT'S AN AWESOME ECTO” look. If I paint the thing, we're talking KRYLON.
My main inquiries are:
1: Mounting hardware and methods concerning the roof rack.
2: Best way to fake the movie siren on a next-to-nothing budget.
3: Am I an idiot? I'm pretty sure I am, but I need some feedback.
She also needs a name, and I'm open to ideas for the vanity plates. I was thinking along the lines of
ECTO1somethingorother.