Delkevic or?
With the exhausts looking too rusty to recover it looks as though we are looking at a blow to the budget. Delkevic make replica exhausts for the Kettle, but at £1499 they are too hot for me. https://delkevic.co.uk/suzuki-gt750-m-a-b-75-77-kettle-full-exhaust-system-chromed-oem-replica.html However, they make expansion chambers. A 3-3 system that is about half that price in either chrome or black ceramic. https://delkevic.co.uk/Suzuki/GT750/1976/suzuki-gt750-1974-1977-expansion-chambers-exhaust-pipes-black-l-m-a-b-models.html https://youtu.be/ZUArjXUTuY4 There are other makers. I almost bought Allspeed exhausts some years ago, maybe 25 (!) but didn't. Maybe I should have and kept them nice and safe!! The prices now are very high. http://gibsonexhausts.co.uk/index.php/allspeed/allspeed-pricing Another choice might be Higgspeed. https://higgspeed.com/product/expansion-chambers%e2%80%8b/suzuki/suzuki-gt750-lmab-models-1974-1978/ There are so many choices and catering for many siz...