thanks bob.
Problem with the driveshaft, is that it has that rubber that flexes, and will be PITA to remove and replace. I believe it is also vulcanized rubber that is attached to the metal.
With the powdercoat oven, I believe it goes up to 1600 degrees F, and that will surely melt the rubber.
With the thermoplastic spraying, it only goes to 200 degrees F, and they don't have to put the metal to an oven....and will be able to avoid the rubber.
In addition, the thermoplastic spraying is more durable than the powdercoating. You literally need a professional "grinder" equipment to have it removed.
I like the color outcome of the powdercoat though!

Its good if its visible exteriorly. Thermoplastic spray is hidden underneath the car, but will really prevent rust build up, very durable, and still looks good