Trailer towing in WI with Collector Plates?

[Mustard72]

Not sure if this is the right place to ask this or not, and it really only applies to fellow Wisconsinnites, or maybe those that used to live here, or I suppose even those that enjoy studying Wisconsin DMV regulations...

Anyway, my C20 has collector plates. We recently got a horse and will need to trailer it around. Does anybody know what the rules are for towing with collector plates in Wisconsin? I know you're not supposed to carry more than 500# of cargo, but I can't find anything in the Wisconsin DMV site specifically about towing a trailer. I've been thinking about re-registering it as a normal truck, anyways, due to the 500# cargo limit, which I've been over numerous times. It's one thing if I get in trouble for hauling too much weight around, its another if my wife gets in trouble for pulling her horse trailer around, if you know what I mean.

Second question: Does anybody know what's involved in re-registering a truck as a regular truck that was previously registered as a collector vehicle?

And yes, I am aware that getting legal advice off of the internet is probably not quite the best way to go about this. I promise I'll get supporting information from the powers that be prior to doing anything illegal...