Saw a nice 1970 Z28 last weekend at a local show. I have seen it for the last few years and talked to the owner then who was the original owner. This year his daughter was driving it and I come to learn that he passed away in May. Anyway, I was looking over the original window sticker and noticed that there was a specific entry for the electric clock. I thought this odd as the Z28's came with the U14 gauges standard which had the clock. The car also had the Z21 Style Trim Group which had the extra exterior chrome like the RS but it isn't listed on the WS. There was a large photo from February of 1970 as part of the display and it has this chrome so it doesn't seem to be a later addition. Everything else including the VIN was spot on, even the rare VF3 bumpers. Did the window stickers change through the year?