Box and port suze for rockford.t1 15s

[Chuckster]

Just got 2 t1 15s to.put.in my 89 s10 blazer. Puttin behind back seat wall style. Got subs at a steal. Have 2 box designs . 1 8.63 cu ft after sub displacement. The other is 10.23. Thinking tuned to 32 hz. I listen to all genres. Gonna run a rf 2500.1 on em. Want it to drill an all genres. What box size do yall think would be best and port size? Was.thinking round external.potts do to space issues