I know you have heard the exhaust before because it was my 350Z roadster that had it installed. Figure out who I am yet?
If your interested, I do have a solution for the dreaded catalytic converter CEL
I'm really curious on which place is doing the install for free ...PM me
I installed my own Fast Intention HFC's and I found it to be painless with long 1/2" drive extensions and a long torque wrench. Once the nuts/bolts were loosened, it was impact wrench the rest of the way. The hardest part was the reinstall and keeping the ring gasket centered. Help from a friend made the reinstall easier.