I retired my B&B's after 8+ years because of cracks at the WG pipe. Other then that they are still in fine shape, just not up to the task of a dedicated track car.
I'm hoping to get a couple years out of the Schnell's. The weight diff between the two sets is more then 15lbs. and it's not all heater boxes. Tank vs. Tink
82 930, 2500lbs 430hp, Black | 85.5 944 Cup / ITS / PCA4 racer, Black
87 Carrera, stock, GP White
00 Audi S4 - 340hp, Imola Yellow
03 Boxster S, GP White