Word, I havent seen your cougar but that is a damn nice looking contour. I guess it's a matter of personal preference. Tuning really is something that you should be able to handle through a good tuner, unless you are leaking in various places that it not something that should be too difficult to fix, ADC most definitely should be able to get you 90% there.
As far as i can tell all it needs is 20min with some new vacum line routing. Once you look over everything and take some time to see how it all works, the routing is actually very straight forward.
