I had this problem before the rules changed, not sure how things are now but problem I had was my jeep was not very street legal looking
. I got a VI so I couldn't insure it anymore, tried for APV45 but because of the outstanding VI I couldn't get that either. I was screwed, so if your regi is still clean you can probably get APV45 if it still exists, or regular insurance.
But let me know what you do because one day
I will have the same problem