I have a BA falcon wagon with my gear in a trailer.
Chris-fords are even bigger than your holden,they are huge inside
Mine is factory gas and does 600 km on $50 of gas towing a trailer
Bought it on Ebay a couple of years ago with 80,000 km for $11k
I used to tow a trailer behind my F100 that I have had for 20 years,but now I have 2 kids ,and the wagon is working out a treat.My BA is now my tradesmans van(with tool trailer)delivery van ,grocery getter and surf cruiser. I havn't even driven it in the last year and my wife is making me sell my old(bet very cool)F truck and plans on using the money on a windsurf holiday to europe -If it keeps my wife happy,I'm happy
Trailer fits 8 boards with 10 sails ,with room up front for kids rigs,esky,kids bikes and wetties .harnesses,unis ect.
It is homebuilt with roller doors on both sides and rear,brakes and angled racks so nothing needs tying down
In Greece we a similar setup ,but I made the rear door lift up and then slide into the roof,but you can leave it half out for shelter
Both cars have got 1.2m wide roof racks to carry 2 boards wide