my stock steel was the same diameter as the FMS alum one. I think that is 3.5", but you can find the diamter of the aluminum one online pretty easily. On my 94 they were both the same... jsut one was pertyier...
Thanks. I wanted to know the size because there is a clearance problem with the exhaust and the stock shaft. I didn't want to make the problem worse. If they are the same size then i'll get the FMS one. That one i know is 3 1/2". Thanks for your help.