They don't reduce vibration, they allow for the motor to rock which in turn require the pipes to be able to flex. I used 8" long flexes as they won't bind up under the rocking of the engine.
2000 SVT Turbo 295hp/269ftlb@12psi
#1 for Bendix Brakes Kits!
Knuckles rebuilt w/new bearings $55
AUSSIE ENDLINKS $70
Gutted pre-cats $80/set
A lack of planning on your part does not constitute an emergency on mine!