And Jegs sells a mandrel bent Flowmaster set of pipes for the cost of YO plus Yo's shipping, free shipping at Jegs.

http://www.jegs.com/i/Flowmaster/389/15806/10002/-1

For the same price I'd rather have mandrel bent.

Or you can get a set of crimp bent ones like YO from the local muffler shop installed for the same price.

They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.