The Silverado 4500-5500-6500 look great, but I don't see many of them, have they made a dent in the Ford F-350/450/550 market, which after 2020, the Ford Super Duty seems the same as F-150 with a different trim. The 4500-5500-6500 maybe would have sold better as GMCs as well., as GMC had a big presence in the medium and heavy truck
market back in the day 1920 through 2009 with the last of the GMC Topkicks. Proud owner of a 1955 GMC long-wheelbase stepside V-8 with GM Truck Hydramatic.