Looking for help with a enclosure for a 90 corvette coupe.

[Jay69mx2000]

Hello I have used information off the forum for a few years but haven't needed to ask a question until now. I have 2 sundown sa 10v2 d4 subs on the way along with a sfb3000 and a sfb 200.4. I want to build my own enclosure and can read a plan but I don't have the knowledge on how to design it. I want to be slot ported to 32hz port can either be pointed towards the glass between the subs or on the side or sides where it will fire to carpet. I want to flush mount my amps with a removable top that will screw down. And this will cover my storage so I want to make a small storage at the back that will use a piano hinge and double latches. I have very crudly drawn what I would like it to look like because I just can't draw. If anyone can design a box I can pay for the plans. I will get my exact dimensions when I get home tonight if anyone is interested. I forgot them in the garage. I included a image of the area it's going in. Not my car but identical.