StreetKa bumpers will not fit on ANY other model, they are longer because of the wings and have a differetn mounting system.
sportKa and Streetka bumpers cover the lights partially
Sportka bumpers are compatible with older Kas fully
1.3 Ka's switched from weasher jets int eh scuttle to on the bonnet around 2003 IIRC, and sports have always had them in the bonnet.
Same for the boot itself the contact pins got removed from the bottom