550rwhp is safe all day long on spray and boost. 600 rwhp is where you start to hold your breath. If you put all ARP bolts throughout the motor, it will live for a long time at 600rwhp.
You can make 700rwhp with the stock bottom end but, who knows how long it will last.
Dover, contact Brandon at IPS and they will get in touch with RPM for you.
I think half of the T-56 cars on this fourm had them rebuild their trans, I know I did along with Sam, Matt, Sean, Garrett and many others.
How the hell have you been pulled over for loud exhaust? Stop driving through neighborhoods in first gear idiot.
I probablly have the loudest car in this thread and I have NEVER had a problem with police and my exhaust.