[1983 gsx550 basket case]

Hi all,

Need a bit of help

Just bought a basket case that consists of a

1981 gs550 modified frame

1985 gsx550 engine

1983 gsx1100 katana swing arm and wheels

1984 gsxr750 forks with anti dive

There are parts missing,

Could anyone suggest alternative parts as I'm having trouble sourcing them.

Any help would be appreciated

Thanks in advance for the help