Not quite a cube but cube-like...
Tank measures 36x30x20 - $150
PENDING
Has center internal overflow, 1.5" hole with standpipe
Sump is a 77g tank - $50
3 baffles (not installed) for bubble trap and 2 inch side drilled for external return pump. can be plugged as the bulkhead is threaded. Comes with bulkhead and threaded plug.
Pics of tank:
