hey guys just got a corksport test pipe gonna install this friday =) just a few questions. The donut gasket is the thing on the end of the pipe right? theres no actuall rubber gasket. if so how does that thing work thanks. and where do the springs go... inbetween the bolts and the test pipe side or on the bolts in between the test pipe and down pipe. thanks a million guys thumbs up for the best forum EVERS!!!