Mk2 alloys

Hi! I'm trying to restore a mr2 I've not bothered with for 10years. It's a 1992 non turbo import and needs a bit of work. Can someone help me with alloys? What size do I need? Where's the best place to get decent ones? If I remember rightly, it used to have 17" on the back and 16" on the front... But I've had them changed twice since and don't know much about cars. 

Thanks in advance. 

If you are still looking. Your car will be second revision that was introduced in December 1991, and came with 15" wheels rather than 14" as the early cars did. You can trawl eBay and setup some notifications. They will come up from time to time. Alternatively contact the MR2 enthusiast clubs.