These add some pizzazz to any engine. I had only seen one other engine with these installed, but I knew when I saw them, I had to have some too! They were easy to install, once you remove the necessary items to get to the bolts. Always provides an opportunity to clean up other things though. I would have given it 5 stars, except for the clearance. The catalog description mentioned it would clear 1.6 or 1.7 roller rockers, but they do not with the oil filler baffle in place. I have the 1.7 Ford/Crane type. That is the only problem you'll run into though, because otherwise there are no problems. I added a 1/2" spacer on the intake, but these would fit without having to do that. I talked with Ford Racing, before ordering, who advised removing the baffle for fear of sucking oil into the intake. This, indeed will happen with the baffle removed. The CJ Pony guys suggested adding a simple small engine fuel filter to the tube running from the filler neck to the intake would resolve that problem. Thanks CJ c