Sounds like you need a Magna, then! They can be quick/competent enough cars, specially the AWD ones.
Extractors will do very little at all for performance (maybe a couple of HP on a standard motor). Get a light skim on the head if it's virginal ($60), a new Rollmaster or JP timing set ($120), Crow split pattern cam ($280), Crow valve springs ($100) and some generic precrossflow lifters ($80), cam change gasket kit ($65). Factor in whatever labour you can't do at home. Extra folding will be well spent on a nice dizzy rebuild or XE distributor conversion.
Then look at extractors, and either a carb conversion or 2V swap. It seems a boring way to progress, but gets you going fast enough.