What is the difference between Honda XLR and XR (fiber tank, Only kick model, No battery)?

I am hoping to buy a Used Honda XR today in the evening. it is a model that use to have a white tank but now has a red tank and RFVC engine (Embossed emblem on engine), This bike only has kick start and no battery at all. I would like to know how to identify XLR and XR. because what i want to buy is XR and this bike has a metal red tank which is been fixed from a different XR. Is there a specific way to distinguish XR from XLR. Like nuts that fit the Fuel tank to the chassis etc? please help.