"build any box as long as its within specs and fits and build the port to tune it and it will work for sure"
if you post your final plan, one or two folks can confirm that you've got it planned properly.
"my biggest problem is does the port have to be a certain way or can i say make a skinny and long port vs a short n wide one....whill they sound the same as long as they are tuned to the same frequency?"
yeah. the port can be any shape more or less. the area and the length are the key components. it can be round, square, rectangle, slot, just don't make it super thin and you'll be good.