I have a 2008 Moomba outback v. Only had g1 currently. Going to automate 750s in the back. Does anyone know the biggest sack I could fit in the ski locker to replace the factory 400lb? Wakemakers sells a fly high 1180 they claim fits but that seems huge. Also saw a sumo 800 but not sure if that'll hook up to the factory fittings. I know an ibs would work but we use all the storage up there. Thanks!