Lots of eBay one's don't fit, not entirely sure but think half the pipe doesn't actually unscrew/come apart anyway so will require welding. Would personally just go down to a local exhaust place and get them to weld a pipe in place, probably costs around the same minus the hassle.
Issues are just going off what I've seen in the past not personal experience, from memory I think deano1978 was the last person to report issues.