and1234rew

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