Hi. I live in Ct as well. I own a M923a2 so, I can probably answer your question. Connecticut sucks! As you know, just registering a car here is a tedious job. When I bought my truck in 2015 it took 3 trips to the DMV in old saybrook at 3-5 hours each time. And, that's with showing up before it opened. Here are some tips to help you thru the process...
1. Get the VIN verified a local emissions place first. how? You can't drive it without plates! Oh.. go back to the DMV and get a temporary commercial plate! Because they have no idea what to do with the truck!
2. If you have a SF-97 form, keep that in your pocket and do not show them that! They will look at the GVW and, send you to a licensed truck inspection place we to make sure it's road worthy. Just bring a bill of sale and, keep the GVW on your registration form blank! Or O.
3. Prepare to write a letter to the commissioner of the DMV explaining that the truck will NOT be used for commercial purposes. Get that notarized!
4. Go back and find out that your missing some other piece of paper 2 more times.
5. They will put the plates on the counter and, just as you think you are walking out to put them on the truck... they call over a supervisor to tell you that you need to call the DOT to get a waiver.
Good luck! Oh... btw... drive north to VT or Maine. Register there. Way easier!