They didn't hold up well either. The first group they bought in '87 had to go back to White and have plates installed inside the upper door opening, they had all cracked terribly in that area. The subsequent years had the plates factory installed. I had been driving Ford L-9000 before that, I didn't care for these White's at all. They also had the L10 at 300hp vs. the 855 300hp in the Fords. That's another thing, they had to go back for new radiators too, the L10s kept blowing head gaskets from overheating. After 3 years of the White, they went back to the L-9000