Another possibility is getting the parts from another G-body. Many parts were shared between them. You may even find something from another model that fits and which you like better.
Malibu, MonteCarlo, Cutlass, Regal, Grand Prix, LeMans, Bonneville (one or two years it was a Gbody), etc.
Some parts may be common in 2doors and 4doors, others will be specific to the body type.