Soederlogan

I need help, i want to build a custom box for 2 vxf 12s and a jp23, i want it to be tuned to 32 ish hertz and i need it to fit into a jeep xj, its 42” wide at its narrowest part, i was wondering if anyone can design a box for me, i dont want to mess up my tuning, i want sub forward and port forward with a pipe port or whatever it’s called, can someone design me something?