I need advice on changing my tow bar. I have a new Vauxhall Zafira Tourer. I have a 2002 Bailey Ranger 470/4 which despite being old is immaculate. We are loathe to change the van but wondered if we should go for a different tow bar than our previous one. I ask this just incase we changed the caravan to a more uptodate one.Previous towbar was the flange type which suited the caravan. If we were to change the caravan in the future we would likely need an ALKO hitch. Any suggestions as to which way to go and if there are ways to adapt the current caravan set up? HELP ASAP PLEASE