They dont sell complete packages because the harnesses are specific to each car. There are 5 separate harnesses: front light, engine, dash, rear body, and tail lamp. In your case you also need a power top harness. It also depends if you have guages, console, auto or manual trans, 6 or 8 cyl. etc, because each is different.
I buy mine thru Classic Ind, or Year One. American Autowire Inc is one of the manufacturers. They are well worth the money because they are EXACT repros down to the wire colors, connectors and even the hold-down clips. Don S