That VIN tag looks a little wonky. Where is it mounted? I'm pretty sure the one on my 58 Suburban is on the driver's door pillar. Chevy also started stamping the VIN on the frame during the Task Force years. Look at the drivers side top of the frame rail right near the steering box. Your VIN is stamped there. That is the authoritative source as far as I know.
The "Serial Number" tag looks just fine no wonky at all. There is no VIN on a 55 to 59 Taskforce truck. And thank you Bill Hanlon. It seems places like Wikipedia has changed since about 10 years ago when they had the correct information. The VIN started in the 80's all say and is a 17 Character number, that follows an ISO standard. And his photo shows the number tag on the driver door hinge box pillar, 58 and 59 did that. 55 to 57 did it up higher near the windshield on the same A pillar.
If it is a truck engine it will have solid lifters and the powerglide car engine will have hydraulic tappets.
I have a question the last numerical part shows what number the truck is from the assembly plant, starting with 100001, (using 1957 salesman manual), is that all trucks from the model year or all of the taskforce series or what?
3B = 3200 series
59 = model year
K = Kansas City assembly plant
Unit number is the next group of numbers see above.
