I am in the process of trying to buy a clean silverado shortbed 2wd. I found a very clean 87 in my area at a used car dealership. The truck is clean, as well as the undercarriage but I notice the flywheel is exposed. This has me concerned. I notice that 81-87 trucks I've seen, including a couple plow trucks at my job, have exposed flywheels as well. Did they come with a cover from the factory or were they actually exposed. If they did come with one from a factory, I wonder why they are off?