Help id-ing by Vin # might be a good find for someone

[panhead59]

I tried identifying my 68 SWB by the info in the 68 Chassis Service Manual but fell a little short. The Vin is CE148B120902. I know C = Conventional cab. E = V-8 motor. 1 = 3600-5600 Gross Veh. wt. range. But then there are only 2 more #'s (48) before the letter designating the factory that built it. The book says there should be 6 #'s before the factory letter. What am I missing here? I'm just trying to confirm that it's a genuine SWB.
Then there is a 1969 4x4 for sale around the corner from my house. The guy started at $3500 but I have him down to $2250 and I think 2000 cash in his face would buy it. I don't really want it since I am currently working on a 68 but someone here might be interested. It's got a 350 that he says was running when he parked it 6 months ago. He says it runs and will drive . Good title. Better than average body, (pretty darn straight, very little rust on fenders and quarters) but still needs "everything" restored. Rockers, cab corners, door bottoms, seat cover, lights, etc. 6 ft. bed looks VERY good from what I can see. Missing bumpers, some lights, looks pretty rough to the average person to be honest. Vin # CE240Z105632. Does that = a true 4x4 1969 SWB truck? Just wondering.