The 86 and 87 YZ 125 CDI boxes -- would they be interchangeable? The connectors appear different but that could be spliced. 87 http://www.ebay.com/itm/1987-YZ-125-CDI-BLACK-BOX-IGNITION-87-YZ125-/140743498036 86 http://www.ebay.com/itm/1985-1986-Yamaha-Yz125-Cdi-Box-Part-55y-85540-/200966717477?pt=Motorcycles_Parts_Accessories&fits=Year%3A1986%7CModel%3AYZ125&hash=item2eca8cc025&vxp=mtr The 86 is 20 bucks. The freakin 87 is 119!!! I have a bad one on my 87 125 and im looking to replace it.