Join Date: Nov 2009
Location: Lander, Wyoming
All of the OEM '87-'07 black painted 'stainless steel' header pipes came with 2 mounting tabs welded on for the factory screwed on Heat Shield. They are identical in length and diameter to the '08-'17 brushed 'stainless steel' header pipe. ('08-'17 has a smoother, more efficient bend at the front.) These two headers are a direct interchange, as are all years of OEM (quiet) mufflers.
The header pipe and muffler which came on your Used Bike must have been a "Complete Racing System". Therefore neither the header nor the muffler are compatible with anything else.
Modify at "YOUR OWN RISK"!
Still riding my 1987 KL650-A1. 84,000+ miles & counting