I am doing basically the same thing right now (408 stroker in a 72 scamp) only mine is a magnum 360 and just did some pretty serious research. if you plan to run it on the street at all but still want good strip performance I would go with an edelbrock rpm airgap. unless you plan to spin your stroker motor past 6500 there really isn't anything better. it will give you great power down low for better streetabillity and still pull very hard on top. if you plan on running hydraulic lifters this manifold would be ideal since hydraulic lifters cant handle more than 6500 R's anyway. if you want to go strip only and plan to run rpms past 6500 with a solid roller cam and dont mind ajusting your valves all the time, a victor would probably be the way to go. I went the hydraulic route because I do want to drive my car on the road a bit and figure I can always throw a small 100hp nitrous shot at it and run faster than I could with the strip only solid cam /victor motor.:-D