I did the entire lower the rear on my 76 last summer. If you believe the pundits that car could be worth good money. So any money you invest now you'll get back. 31mm torsion bars, sway away spring plates. Poly bushings but grease them. Tarett sway bars, Bilstein hd or sport, lower it down to 24.25. It gives you the width of a finger between the wheel and your fender lip.