M9 back brace?

[WICKED_SS]

Im looking a buying a M9 9" and didnt know If the back brace is needed for my car. Im going to have a 650 hp 496 built, and the car is mostly going to be crusing around town but will do a few auto x a year. I emailed moser and they replyed with " I think for a street car you need the back brace" hmm Think?? I seen mary's camaro has a F9 and dosnt have a back brace and a few others.

Is it needed for what im going to do with my car?
And are there any venders that I can talk to about ordering a complet M9?

Thanks,
-Brian