I just found this listing and thought it may be of help to someone doing a full resto job
XS1100 Replica muffler with balance pipe , no box $670 pr
XS1100 Replica engine pipe with collectors $790 set
Exhausts
Overlander is the only firm that makes a such huge range of pressed mufflers, from a BSA Sloper to a Z 900 Kawasaki, and is the only supplier of stainless steel parts with a flash chrome finish. This finish largely prevents the bronze discoloration of polished stainless steel due to high temperatures in the exhaust and applies to all engine pipes and most small mufflers. If required larger mufflers can be plated by order.
If you don't find the muffler or engine pipe you require on the list, please enquire. If you have a sample there is no system we can't make.
Available from
http://www.dropbears.com/o/overlander/exhausts.htmThey're a bit exxy but might be worth looking into