i had a friend that ran low 12's high 11's in his cobra with 470 rwhp thats on ET streets though. befoire he sold it it had 600+ on spray and with the stock clutch and half shafts out back he ran a low 11's. (ill give him a call to see if he still has the slips of remember what the times were exact) no the less his car was real fast. i only got to ride in it w/ 470rwhp and that was pretty sick

mods at 470 were
S/C pulley
full steeda exhaust
steeda CAI
diablo chip (it think that what it was called)

then he had the S/C ported and the TB portmatched. added an intercooler (heat exchanger) and had a 50 shot. he also had sparco front seats and had a rear seat delete.
here a pic of his