Yes, they are easy to install and you do not have to remove the bumper. It can take a bit of patience, though, if everything doesn't line right up at first. I had to do a bit of strategic bending on my drivers' side.
'65 Coupe, 302, Autolite 4100, C4, 2.80
'72 Grande, 351C, Motorcraft 2100, FMX, 2.75