I am pretty happy with the obrien air cleaners. The mopar/corvette would cover it up too much. I could do the ford oval with a custom base plate but the oval tops are used on dual 4bbl setups and are even available for single 4bbl. Datsun had a smaller one that I could fit with a custom bottom as well. One guy I hooked up with has one with an air cleaner ford had made for it. But the Obrien setup makes it stand out a little.
I have messed around with the tuning of the motor a little and am getting it to run pretty good (adjusting inital, total and the curve of the timing). I have a spring kit for the vacuum advances so I am going to play with those again soon. I might wait until I put a looser converter in before I mess with the springs too much. I had tried before with limited success but then figured out my timing was messed up and without good timing, messing with the carbs tends to be less effective.