Help with enclosure design 1 american bass hd844

[Simonusa2010]

Hi maybe you guys can help me

I'm looking to build a perfect box for my American bass hd844, i looked online and couldn't find any information about the speaker I did receive the spec sheet along with the speaker but the parameters are off, because when I input them into winsd how me box like 8cu ft it doesn't show up correctly any input appreciated!

if you gays can do some suggestion i need

box net vol.

Port vol

Tunne

They go to sedan car in the trunk

Amp around 750 watt