Many years ago "Jimmy" was a nickname for any GMC truck. I'd forgotten that GM actually made the Jimmy nickname into a trim package.
If my guesstimate is right, that's really low mileage (kilometerage?), about 60,000 US Miles? Mine's a '98 and has about 78,000 mi (125,000kms?).
Oh yeah, that's a pretty color on your Ranger kit too! Looks like it should polish up nicely.
Regards,
David G.