Varijet to holley adapter
Redline make the adapters, jsut go to repco or the like and they will have a redline parts book.
Redline also make an holley manifold to suit the 202 aswell.
Honestly I recon your wasting your time with a Holley, they are a race carby, they will pump a **** load of fuel into your engine and thats about it. The 34ADM Weber is a much better carb, as it is a progressive carb, meaning it has one set of jets being used when driving around, and has the secondaries open up when you give it a boot full, still giving you plenty of power at your foot, but good fuel economy to. For a street car I would be sticking to either a varijet or a Weber.
The only reason I mention the varijet is that they are already fitted so a simple reco, or professionly reconditioned one will give you some power back. The weber is by far the best if your going to bother to change a carby, and is easier to tune then the holley and you will get better results as you wont get any flat spots as you do with thr holley as its just pumping petrol in.
Sorry that became long, time for bed me thinks.