Cleveland,

check out the reading under the home porting cylinder heads title on the main forums page. You should be able to port and gasket match the 2v heads to make them breathe better and may want to consider having a machine shop cut and re-seat them for bigger valves in the process. You can also have the valve guides done and have the heads shaved to up the comp ratio while you are at it. Check out the prices in your area for this before jumping in. You may get lucky and be able to find some 4V heads for a little more although they will probably require quite a bit of work too. Since you are using an auto tranny I would stick with the mild RV cam and either an edelbrock or holley aluminum intake with a 650 carb of your choice. As for sound, the guys in the vid are running open headers.... run an exhaust system with a set of moderately tuned mufflers such as the Flomaster 70 series. it will give you a little rumble without pissing off the neighbors. Flows are a little more expensive than some systems out there so look around for what you want that fits your budget. E-bay and other on-line sources can be a great source for used parts like intakes to save you $$$ I picked up a used Edelbrock performer 302 intake for $70 shipped.

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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.Albert Einstein