Stop in for a cup of coffee
they are not very thick bars, I wouldn't imagine they could make that much of a difference, but engineers did put them on for a reason I guess.
I don't remember years ago paying attention to it when I had a 74 duster with them and I have only driven older cars without them till now and I have not been able to drive my 75 yet so it will be fun to compare and pay attention after I get the 75 running.