We like 27 and 22 the best. The license plate style in #27 is great. The car shape is nice touch. We also like the gray gradient word "Integrity" in #22. Another option would be to use the gray gradient background from #19 in the plate with the darker font.
Not crazy about the red oval - can we change this? Maybe a version with no slogan at all and one with a subtle or no background? If you have a simpler font for Integrity Automotive that would be great too - this has to read well from far away on a sign. Getting close...