Need advice for good setup

[BassHead42069]

Ill get actual measurements soon, but I can definitely fit 2 12s in there and still have a lot of extra room. I'm not sure if it would be better for the port to fire up or back, but now I'm thinking I want to get 2 ultimax 12s and i'll make a box for them. Do y'all have any amp brands you could recommend to use with those? Also looking for some more speaker/ speaker amp recommendations. Thanks for everyone's help so far.