Easy now boys. The Seawind might not work as a "true" amphib. right out of the box, but with some ingenuity, you should be able to make it so. I haven't seen the product myself, but you just need to seal off the nose well. Easy enough to seal around the air lines. The stearing cables might be more difficult, but I beleive Dubro has a part that allows stearing cables to pass thru a bulkhead with out transfering water, or you could just let the nose wheel caster.

If there is a will, there is a way: