Ben , so very sorry to hear about the Winnie, but can you imagine the fun that family will have for years to come rehashing this awesome trip? Great stories, better record them for later collections.
I have helped several friends with similar problems and I was told you could replace the engine with a short block or long block quickly . Also I have replaced 2 360 ford 's with junk yard engines. HOpe you do not have too much grief over this.
Great Karma for those friends that you have coming to collect you and yours.
Ride on, best of luck