273 Conversion Questions?

I wanted to rebuild my 273 as close to stock specs without having to have parts specially made. The Isky E-4 cam is very close to the stock 4 barrel cam specs. It works well and has a slight chop at idle like the stock cam has. The Egge pistons gave me a 9.6/1 ratio after milling the heads .030 and using a thin head gasket. I am not a big fan of milling heads/intakes but my heads were 2 different part numbers so it really didn't matter. But now I have a pair of heads and a intake that will have to stay together as a set or there will be a mismatch. I wouldn't worry about building a 10.5/1 motor. The 9.6 compression is pump gas friendly. I would hate to see you build a true 10.5/1 motor and have to run $8 a gallon race gas so it wouldn't ping. You have the 4 barrel intake and you are looking for a carb. You will also need a dual point distributor and of course the dress up goodies, valve covers with the chrome breather and pcv cap, and the air cleaner. You're on the right track. Keep us informed with your progress and have fun. tmm