Bruce: I can't recommend a collector car insurance co. but if you do go with one of them make sure you read the fine print. Some companies require you to keep your truck in a garage and limit the number of miles you can drive in a year. Just my $0.02.
I have mine covered by State Farm. My agent is a car guy too, he specializes in classic cars. It's all based on an agreed value of your truck. Right now while my truck is under construction the insurance is cheap. Maybe $100 a year for full coverage, but thats for an agreed value of $2500 I'm sure it will be more when it's finished.
I'm sure someone else will chime in on this one.
George