You can have a custom camshaft built for your exact engine/transmission combination. Stroke, compression, heads,valves, and all the variables. I found out the hard way that it isn't much more than an "off the shelf" camshaft. Mopars also have a larger diameter lifter than the other "2", so you can take advantage of this feature, and tailor this to your specific build. I'm having Jim at Racer Brown build my custom camshaft for my 408. "Rumblefish" is one of many knowledgable members that can guide you in your choice. Calling "Rob" "Rumblefish", could you please help our FABO member?