Building box got specs need port help

[My63impala 10+ year member]

ok so i have two 15s Lethal Injection D4s being shipped tomorrow and want to start the box plan to get wood tomorrow if can get the box specs down pat.

so here is what i got from Re Calculator

Box width:51

Box height:21

Top box depth:21

Bottom box depth:21

Wood thickness: 0.75

perfect cubic feet per sub at 8.5 (4 per sub)

ok so the problem comes in with the ports. I want the box tuned to 34 or 32 hz. and in Re all you can do is a side port would that be fine for this install with the two 15 sitting on there side (not up toward the roof) if so then i want a

7.5 width square port with a 3in lip. Will this trow off the placement of the subs should i do a bottom port or Areo port?

LIKE I SAID WANT TO START TOMORROW SINCE I GOT A DAY OFF WORK//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

Thank you AJ

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[My63impala 10+ year member]

need to know how many how big and how long aero ports i should run and were to buy them thanks guys will have a build topic if i get this settled