67 C10 bagged shock measurments?

[charx2]

I ordered a bunch of stuff from CPP who are awesome btw, but I ordered the wrong shocks for the front I know. The shocks I ordered measure 12 1/2 Extended and 8-1/2 collapsed. Well I just went out and measured and I got almost 16 extended and like 12 collapsed. My thing is that the shocks I got are for trucks that are lowered, stock sizes are 15-1/2 ext. and 10 collapsed. Why would stock seem to fit my bagged c10 better then lowered? Can someone who has a bagged 67-72 truck please measure their front and back for me? I went out to remeasure and for some reason my #1 piston is not firing and motors running like garbage. I know that your measurements might be different then mine but it gives me a better idea as to what to get. I have a c-notch in the rear btw. Thanks all.