I've ordered from Ordway Sign Supply for years and never got a bad shipment.
They will rip any width you like.
The FDC 2100 metallic and 3700 ultra metallic are great.
FDC 3700 Cast Ultra Metallic 5 Year Vinyl Film
3Ms are great but are in solids only.
Generic (409 cleaner) sprayer, water, 2 tsp dish soap, 2 oz rubbing alcohol for application. Bondo spreader and or a smooth edge credit card to squeegee out the bubbles.
Hair dryer for heating and stretching around sharp radius's.
Laser level with line splitter for layout.
Its a good idea to Claybar the areas to remove any trash stuck on the paint.
Meguirers makes a decent kit.