Need advice help.

Another fly in the ointment is your lower control arms to sway bar combo, if you use a factory anti-sway bar, so there is I guess about 4 possibilities

1...No sway bar, in which case the LCA can be from any year 67 / later

2...Aftermarket bar, which will depend on what you buy

3...Early 72 / earlier bar requires different LCAs

4..."Through the K" 73 / later bar requires later LCAs or fabricate as necessary