You can check sites like these..
https://www.tirebuyer.com/products/51759:51760/wheel...I like Discount Tires stores even more. They bought the last 5 Liquid Metal Chrome Drifters in 114.3x4 that I found online (factory clearance) at my request and verified the fit with 205/40/16s, guaranteeing the fitment, and matching the web prices I presented. And BONUS, they are smart enough to use glue on inboard side rim weights.
You may not have the $ for new, but checking with experts like them can verify the offset required. They actually pulled out a book they have and verified my selection, guaranteeing that I would be satisfied with the clearance.
Actually, I think I got off on a rabbit trail there.. Offset and rim sizes will vary depending on whatever stock wheels you want to compare with the capri. So, If you want to compare stock specs, here are two things you can do: search TeamCapri for terms like offset and wheels, (I know there are some good previous posts here - maybe under the parts from other cars category?
Or, if you want to dig in and do your own research, RockAuto.com can provide you the specs for just about any car rim ever sold. Start with our bolt pattern but keep in mind that the offset (backspace) hub diameter, bolt pattern, rim diameter and even the projection toward the outside of the car (rim width) can play in finding a fitment that does not rub inner sidewall on strut, or struggle with hub diameter issues (usually plastic insert rings can make oversized hub holes snug on the stock hub, making a different wheel "hub centric " see Discount Tire again, I got all 4 of mine for $5).
https://www.rockauto.com/en/catalog/mercury,1992,capri,1.6l+l4+turbocharged,1196669,wheel,wheel,7644