has any one ever heard of a kettle grill that works with gas ?? not a gas starter, but cooks with gas.

You mean like this ???Kettle gasser

They have them in Australia, They are used for indirect cooking, If you are going to use a gas kit in your kettle in my opinion you are better off using a genuine gasser. They use the gas kit because the cost of charcoal and briquettes is so high.Also back when they first were released gassers normally were just a hot plate without a hood.
Here is a link to the gas kit - Gas Kit

Regards