i have commercial tags on my 51 6100 dump. depending on what weight class your trucks are you may want to reconsider. my class six tag for the plate is 288 buckaroos(which are now due)not to mention commercial insurance. another 500 clams (which is now due) its a lot of money for the use it gets. but im in the process of getting antique status because of the cost (i say this every year). as for inspections i love the look on my mechanics face when i schedule for a sticker. i help him and make so im the first one at the shop that day. with two trucks you could switch them out with the antique tags and never have a issue.