So I was recently given a Keating machine 12 valve tappet cover but I have a 24 valve does anyone know what needs to be done to make it work on my 24 valve ?

According to their website, you have to convert from VP44 to P7100, to use the 12 valve cover on a 24 valve. 24 valve has it's own cover w/VP44 (part # 120510-2VP44).