OK, for the record:
Rear bumper assembly: 8.2 lbs.
Factory cat: 9.8 lbs.
Stage 2 Exhaust (S-specific Janspeed): 19.8 lbs.
Larini SE (welded tips): 15.2 lbs.
I must admit, you all are the biggest bunch of weight weenies this side of cycling. Granted, I know cyclists who will spend $1000 to save less mass than I can sh*t, but this group is pretty close!!!