Also I got the the 4ohm version of the FU750s so I can run them at 1ohm... The guy from FU Facebook page sent me the spec sheet for these that include optimal vented box size n everything.
I went and bought 2 one pound boxes of 1 1/2" deck screws, a big bottle of Titebond III wood glue, 16 Spiked T-Nuts and 16 1 1/2" of the hex head bolts. I order a set of 4 90degree corner clamps, n need to make some 48" simple wood clamps because 50" clamps are friggin expensive as hell lol... I'm hoping to go buy my wood tomorrow. Thanks guys, you all are super awesome so get along!!!