Count again the number of teeth in the inner gear on the freewheel to verify the number of teeth. I don't remember an odd number of teeth for that one. It's usually even such as 28, 30. 32 and 34. Suntour obviously did make a 14-34, 5 speed freewheel because you can find used examples for sale for $$$$ on eBay (
https://www.ebay.com/itm/255757832564). If you can live with a reduced gear range it makes sense to go with 14-28 because it is the only brand new one that sells for a reasonable price.