Sure you can hire Kevin Marti to run a report if your really interested in the results
Don't think I would consider a model car company a reliable resource for production information
1. I looked in the Marti book and didn't see the sport wheel covers listed as an option for 1971. in 1970 Marti book lists the styled steel wheels as an option, though those were no cost on mach 1, so I was surprised not to see the sports listed for 71. Maybe the 71 facts book would have that info.
2. Yes, I could pay Marti to look, but I don't want to know that badly, just a casual inquiry. Besides, when I wanted to pay to have research done a few years back to find Marti Report for my friend's 67 Shelby that he bought new and later sold, the hourly price was astronomical and they wouldn't set a limit for how much research it would take. I thought that was strange because I knew what dealership it was sold from, and there really couldn't have been that many green 67 Shelbys sold there.
I was kind of turned off by their reports, anyway, when I got the Deluxe for my dad's 70 mach 1 that he purchased brand new and the dealership was wrong on the Deluxe Marti. If I hadn't known the actual dealership, I would have never discovered the mistake.
3. Of course I am not relying on the model company, that is why I posted here. Kind of figured someone would have had the sports turn up on their Boss 351 Marti, and I actually figured for sure that someone would know if they were no cost option or not. I did learn that no 15 inch wheels came on other 71 Mustangs, so at least I know that now.