It is made of Stainless Steel that is primed with an etching primer, then painted. you lose no under trunk space at all and retain 90% of the stock under-fender for maximum protection of underbody. As far as the directionals, the ones in the lower righthand picture are actually stock ones that are simply tucked in a little. The angle is fully adjustable. The stock license plate lamp simply pushes into the supplied socket in the kit that allows light through a louvered section of the kit to illuminate the plate in it's new location. Also, the unpainted version is mirror finished (nicer on Black Busa). As far as other brands, I'm sure they're all nice kits, just pick the one you like the best. This is just like I said, another alternative. I'll try to get some better, more explicit photos posted as soon as I can.