When I performed my previous search, I found a wealth of info but it was hard to tell what was what. So many opinions, so many different statements, and web searches didn't help much either. It seemed every other website had a different weight for the battery.
They say pictures are worth a thousand words, so that's just what I did. In the pictures below you can see the Yellow Top compared directly to the OEM battery. You'll notice their length and width are almost identical and the positive/negative post are on the correct side also. The only difference is the height. But once you attach the spacer, the Yellow Top sits exactly as high as the OEM battery.
The very last picture clarifies the weight of the Yellow Top. My scale doesn't lie.