Exhaust Diameter

[Big hub]

Hi guys
I have a vxr8, the previous owner has removed the center silencer and has replaced it with straight pipes, but they did not flair the end of the pipes to make a male or female connection so they have welded the replacement pipes together, but these joints won't hold.

So i need to sleave the joints, but I am not sure of the diameter of the pipes without jacking the car up, so can somebody tell me the diameter of the pipes and save me the hassle.
Cheers.

[Big hub]

Hi there , the pipe has been welded twice by different guys, with no luck.
I think to do the job properly the system would need to come off, using sleaves they are just bolt on

[Big hub]

Thanks guys