I want to check numbers on a 68 Cobra Jet I am looking at. Is there anyway to check the vin tags under the front fenders without removing them? Mirror? Where exactly are they located? Also want to check the date codes on the block. I included a photo of the date code by the oil filter. The 8D1 seems right for a build date of april 17th on the vin. But what is the W1? Any help would be appreciated.