If you received your SB-100 exemption and your title has SPCN on it you should have no worries. That is why they passed SB-1578 so people could get their cars registered when they brought them in from other states. The only problem was they also use the same piddly 500 numbers that everyone else is trying to get. Also my Title (Pink Slip) shows 0000 under Yr. Model. As for the BAR test, I think you have to make an appointment. But as long as you have the SB-100 papers that is no problem. Just carry your registration and maybe a copy of the title in the car and if you get stopped the police can radio in your license number when they see the SPCN and the DMV will verify that you are legal. If you haven't finished the process and gotten the title yet, then you should get busy and do it.
Ron
