Seems as if we are going for about the same thing with the same kind of car.. lol.
When you put that 1.6 in there you'd be suprised how helpful a simple vacuum gauge can be. That along with a long gear ratio transmission and you'll be right in the money..
I personally want a mostly stock appearing car with a makeshift bellypan (from a truckbed liner found on the side of the road) and a nose cone similar to the link below. Something that can be removed with painters tape so I don't look ridiculous all the time.. lol.
Modified Honda CRX HF Scores 118 MPG in Fuel Economy Run
Keep up the good work..