Can anyone tell me if there is any major design difference between 06 and 07 Grand Prix GTs, as far as the rear suspension, that would allow me NOT to install a pair of BMR's trailing arms? (I am thinking not)

I have an 07. BMR's site says they fit only until 06. When I emailed the Tech Dept there, they responded that they just haven't verified fitment themselves on 07 and up.

Thanks in advance. Here's a link:

1996 - 2006 GM W-Body | Trailing Arms | TCA011 - Trailing Arms, Rear, Polyurethane Bushings | BMR Suspension - The Leader in High Performance Suspension & Chassis