Same initial procedures as the coupe installation guide but obviously different measurements.
From the bottom of the trunk. measure 6 1/2cm and add your painters tape horizontally accross the trunk.
Now measuring from the passenger side. exactly where the badges would rest at. Measure 20 inches across. and add the painters tape vertically at the black line.
And for the extra assurance. The measurement on the drivers side is also 20 inches across.
Once you‘re done installing the sticker it should look something like the photo below. Giving your 1990 Integra the original label it once had back in the 90’s.