288 GTO (Paint & parts help?)

Could anyone advise where the best current source of 288GTO parts availability is, (new or used) ? Would it still be possible to find the original Glasurit 300/600 Acrylic paint (4-5 Liter cans) enough to restore a car ??? (or) New condition original equipment, GoodYear tires for the car ??? Any help and assistance is truly appreciated.