I suppose it depends on how much you want to do yourself Dave - If your after a full kit, the only one that springs to mind is the Saito Delta Queen sternwheeler..... But it's expensive!
If your only after a fibreglass hull then there are a number of alternatives. It also depends on how large you want the model to be?
40 degrees below! And here I am in the UK, complaining because its's 3 degrees below, and we've had gale force winds for weeks!
Anyway, welcome to Paddleducks!