Here's a video of a race between the two:

Here's what the GTO forum has to say about the SRT6:

-"Stock they run a low to mid 13 second 1/4 mile. For about a $1000 you can change the pulley and the intake an run 12.6-12.8 with them.
Treat them with respect!!!"

-"i beleive they are 320 hp out of the box. i test drove a standard 220 hp one just before buying the gto. i came real close to buying it at 22000. the srt 6 must be a screamer."

-"Sounds right damn fast will def treat with respect lol."

-"Beware of the Crossfire."


Here's a link to the thread where I found the comments: SRT-6 Crossfire - Pontiac GTO Forum