HELP Highly Liquid SKM Casio SK midi help

[J1971986b]

I've spent quite a while trying I track down info on this so please forgive me if this info is somewhere really obvious. I found two old Highly Liquid SKM kits for my casio sk 5 and 8 but I can't for the life of me find a manual, build guide or ANY info on them anywhere. Can anyone help point me in The right direction?
Thanks in advance