Lorenzo: Agreed...I *want* the bigger spoiler. I've never liked the big 'whale tail' kind of spoilers but this addon one is just the right size to accentuate the car without being too subtle or too overbearing.
Tropic: Don't know for sure re: via parts direct, but I had my tips included on the purchase of the car and they are listed as a quantity of one with one part # and price on my invoice (same p/n as Fred listed above, although I got my tips for cheaper).