urs 3'' bore ?

Looks like the mongoose inward rolled 3'' system from that angle ?

Any of the rear box and how the seams are done ?

Need to pull my finger out and sort mine out ive got the 3'' goose with outward rolled pipe. Took me years to find a good un damaged one too. This is my 4th one. Most I purchased didn't even know it was a mongoose system. One chap told me he was taking off his magnex to buy his dream 3'' bore mongoose. I didn't have the nerve to tell him he'd just took a mongoose off his car