Joel, its as easy as this really. An engine is a large pump. The more time and money you spend making that pump flow more easily (and amount of flow) the harder she'll pump for you.
You'd be surprised at how much you could gain by spending $500 to $1000 on your head/heads and opening the exhaust.
That's all I'm really doing here. No machining involved, just bolting on better flowing heads.
If you really want to wake up your car, headword is where its at, although you need machining, cause there probly aren't many bolt ins for that bad boy. Port out intake and exhaust ports to match the gasket, put in new larger valves if room permits, change rocker arms for a little more clearance if you want to go that far. But port matching is probly by far the best way to increase flow. When the ports don't line up or head port is bigger or smaller than intake or exhaust port, your jut causing turbulence and robbing yourself of power.
