3" diameter inlet/outlet and 5" body same as the ktec 3" sports cat flexi section. Brand new I also have a 3" stainless flexi section available separately. £120 posted for the cat
It is a magnaflow cat. This one at £221.25 https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.co.uk/ulk/itm/181975735754 I bought it to weld into my downpipe like this http://www.k-tecracing.com/show_product.asp?id=4409&appid=12