hello new guy here with a weird question

[notmrgoodwrench]

hey there folks just found the site and thought i would ask a question. i have a 67 chevy truck that i bought a while back and when i bought it i took it down and got it tagged and all that then i got my new title back and went to make sure that the vin matched and what do you know the vin on the title didnt match the vin plate i thought well just a typo, but then i got to looking back at some paperwork that i got with the truck and all that had the same vin as my new title so it got me wondering what was going on was it a typo from years ago that no one ever tried to fix or what. there is only one letter that is different on the title than the vin plate everything else matches someone told me that if the last 6 number of the vin match then it should be fine and the last 6 do match the letter that is different tells you where the truck was built so i guess what im asking is can you have 2 different truck from 2 different assembly plants with the same last 6 numbers or are the last six just for that truck and no other one will have them. sorry for the long post just wanted to give some back ground on it so if anyone can help me i would appreciate it thanks alot