I have a question for anyone that has worked with the exhaust or catalytic converter. I have a 96 Rav4 and have been informed that the catalytic converter is out and needs to be replaced. Does this system require any welding? I have done some exhaust work on older cars in the past and can replace this myself if it does not require welding, but I do not have welder available to me at this time. Also does anyone have a link or diagram of the exhaust claps? I am going to try and replace the clamps as well but wanted to make sure I had them all and ordered them all up front before starting on the job.