I own a 2011 SLP ZL-585. Great car and i love the fact that the stripes are painted and cleared over instead of stickers. Mine dynod 499hp/490tq RWH with 500 miles on it. SLP gives a 5year 100k miles warranty also! Its a steal at 49k. Put some lightweight wheels and real rubber and swaybars and youll be good for autocrossing as well.
Best thing is they only produce 250 a year so its very unlikely youll ever see a SLP car just like yours. Buddy here got the first zl-1 in utah in march. There is allready 3 zl-1s same color and wheels as his here in town. Its not as unique as it was!
Go for SLP