The Fun Part --- putting things back together again, exciting but can be challenging when something doesn't fit well like the new taillight lens don't fit into the original housings as good as the old ones.
I'll get some genuine lens and that will do the trick.
I filled all the internal body cavities with a waxy cavity sealer, it sprays well and coats all surfaces well. Great inside sill and door panels and areas where the paint can't reach and is a bit thin.
New Horn Button arriving soon from Virginia Classic Mustang, the old one is just there to make sure all wiring and horns work.