I'm diggin' the Nova! I've worked over a few of those, and yes, you HAVE to narrow the rear end to get any kind of tire under them. A 7" wheel is almost too wide in stock form. In reality, they never made a Nova in any year that could fit a decent tire underneath in stock form. I owned a '67 Nova back in the day and it barely fit a 7" rally and a 225/60-15 tire. I fixed that........
You are amassing quite a collection between the cars and trucks. I see a larger building in your future.