xl vs xr cam

So have a 86XL250R. Fixing it up with newer forks and disc brake, XR exhaust. Has a strang leak, maybe a base gasket. if I have to change it I will do new rings and cam.

Is the XR cam an upgrade to the XL or the same thing?

I may be wrong but I believe that the XR cams were an upgrade

that was my thought also but didnt want to coin out for the same. I see the oil pumps are the same. Thus adding a XR oil cooler is XR side case + cooler parts.

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