what years did the general start

[hugger6933]

putting engine size on the truck fenders? I have a 68 that the emblems were shaved but I was thinking that 69 was the start year for that. What year did the badge for the size move from under the fender emblem to under the marker lamp? Was that in the model year 71? Do you think one of the 8-454 badges would look out of place uder the GMC eblem on my 68? Was it the same as the restof the years Or is it like the chev that was67-68 then 69-72 were different