Measure the ridge with a bore gauge and if less than 6 thou, then re ring. Otherwise rebore it. I would have to check specs on the 2200 motor but I think you can go up to 40 thou oversize.
Do you have a ridge reamer? Remove the ridge prior to removing the pistons. Otherwise you may damage the pistons.
Inspect the pistons prior to ordering rings. If they are damaged then make sure you can buy the same size pistons to replace them. Otherwise you might have to bore oversize to accept pistons that are available. Some pistons come with rings and some do not. Keep this in mind. There are some piston and ring kits on ebay right now.
If you buy rings you will need to measure the gap and adjust with a ring file, to about 16 - 18 thou I think it is. Then install on the pistons. Replacement rings will have more metal in them than the original rings, to allow for some bore wear. That is why you need to file them a bit.
Make sure you have a set of ring compressors, and I would get some ring opening pliers as well. While you are in there replace the big end (conrod) and main bearings. You can do that with the motor in the car if you wish.
Get a valve regrind done. Make sure you set the valve clearances right. Otherwise you will burn out your exhaust valves. You can search on here about how to do that. They may be able to set on the bench at the machine shop. You will need to get hold of some shims for this.
James.