Ordered the bits to replace the MX5 exhaust from the manifold back this week.
Been out on the drive for a couple of hours - catalyst has been replaced, but I can't replace the rest of the system.
(It's 1 piece from the cat. back, for those unfamiliar with them - and it threads between a suspension bracing bar and the rear axle.)
Does anyone have any idea how to get the old system out without a 4-post lift? - the only solution I could see was to remove the bracing bar, which isn't something I really want to do.