[69CATALINADROPTOP]

I am looking for some advice on the engine I am building for my car. First of all I am looking for a a smooth idle (it is a convertible) with as much torque as possible on a budget. I am looking for a recommendation as to which parts I should use from what I have to get a good low to mid range power. This car will be a cruiser not a race car.

The block I am using is a 1973 Pontiac 400 X5 block...stock bore. I have 2 sets of heads...

1)1973 4x heads- I believe 2.11 intake/1.66 exhaust and 98CC

2)1970 11 heads-I believe 1.96 intake/1.66 exhaust

And I have 2 intakes

1)Holly Street Dominator single plane

2) Pro Comp Air Gap dual plane

I will be using an eldelbrock 4 barrel carb

Again I want a smooth idle and a good low to mid response. The best fuel economy possible would be nice too.

Which combo should I use? What would be the best cam to use?

Thanks for any advise anyone has.