04 Sierra 2500hd Ext Cab+Massive Audio Setup Help

[tjsierra]

I have a 04 GMC Sierra 2500HD gas Ext Cab. I use my rear cab often as it's my work/everyday truck, so I'm looking to build a ported box for the passenger side under seat. I will be attaching products and specs, so it may make things a little easier. So I have a Massive Audio setup from past truck- NX5(5channel amp), RK6(Front Components), MX46(Rear Coaxial), Hippo XL84(Sub). The area under the seat is 16"L x 10"D x 9"HFront + 8"HRear (wedge style box @ .75" MDF). So at this point, I'm having a hard time designing this box in this small of an area, speaker and port can be any location. Is it POSSIBLE??? I thought of other options, one being purchasing a smaller sub( Summo 84S or 64S / Hippo XL 64). I do have a tear in the cone from misuse which I epoxied, seems that I fixed that area(Hippo XL 84). Looks like the rms matches up as well as the mounting diameter (NX5-Summo 84S) to the Hippo XL84, if for some reason this sub wasn't fixed I could purchase the Summo 84S?

NX5 https://www.manualslib.com/products/Massive-Audio-Nx5-2953185.html
Summo 84S, 64S https://cdn.shopify.com/s/files/1/0658/1297/files/SUMMO_SUMMOXL_SERIERS_MANUAL_V2.pdf?v=1581707672
Hippo 64, 84 https://cdn.shopify.com/s/files/1/0658/1297/files/HIPPOXL_USER_GUIDE_2020_Combined.pdf?4982
RK6 https://www.manualslib.com/manual/524816/Massive-Audio-Rk6.html
MX46 https://cdn.shopify.com/s/files/1/0658/1297/files/MX_SERIES_MANUAL.pdf?v=1531351810

I'm up to absorb as much info as I can. It's been years since I had a system!! I really want to do it right and sound the best that it can!! A HUGE thank you in advanced and hope everyone is staying safe!
TJ

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