I LOVE the RS door panels where you kept the maroon top portion. Nice touch. Also the white straps. Where did you get the straps?
As for the above ^^ I'm sure he could fab up a bracket to hold it but as long as it functions safely for now that's okay. These cars are always projects to me - never done. but merely infinitely approaching that state. Kind of like a hyperbolic graph. or maybe I'm just being weird now.....
You know those speakers are gonna add on awful lot of weight.....
Be safe, have a good evening!
Cheers