What do you guys do to replace the spring flange and donut gasket on your exhaust... I have a greddy turbo kit and want to go to a larger downpipe but my catback system is 2.5in but the flange that bolts up to the downpipe is reduced to 2" to attach to the stock exhaust or downpipe. I couldn't find a source for a 2.5in springflange and donut.

Do you guys just use a flex pipe at the end and then bolt it up solid? Any and all info would be much appreciated.

Thanks