Sean, your car isn't slower than mine! It's the driver
!
I had a P-1SC on my 96 GT with a built shortblock and 2003 gt heads. It made ~430rwhp. The D-1SC is a much larger and much more efficent blower. I'm guessing he is making somewhere north (probably well north) of 600rwhp.
Which means that his car is faster than both of ours! At least until the road starts to bend.
Anyways, welcome aboard. Sean's Cobra is faster when Sexylexy (J/K) is driving and i'm an internet expert of everything that I have no clue about.