'69 Camaro front marker lights

[DW31S]

Am I imagining this, or are there different locations for 1969 Camaro front marker lights? Now that I own one (again), I've been looking at pictures of other supposedly "original sheet metal" cars and noticed that the placement of the marker lights differs. I can't be the only person to question this. I have no idea if it is because of engine call outs, (or lack thereof) or due to the stripe options. It seems that COPO cars have the marker light back farther and more centered in the area between the front of the fender and the wheelhouse. The cars with engine size emblems (with or without stripes) seem to have the marker more toward the front of the leading edge of the fender. When I first noticed this, I thought the differences might have been due to a replacement (GM) or aftermarket fender. After further investigation, some of the cars with the light farther back claim original sheet metal.
Has this ever been discussed before? Anyone here noticed the differences? Thoughts and explanations are positively welcomed!