1.6 rockers on the intake to help the flow differential in the heads and use some rhoads lifters and use a single pattern cam or a dual that favors the intake side,...you have plenty of exaust flow ,no need for more duration on the exaust or 1.6 rockers on exaust,...but the intake valve needs some help with more duration than the exaust and 1.6 rockers.The standard dual pattern cam favors the exaust because flow numbers are usually way below what you have or are stock.In a good head a single pattern cam makes more power ,you have a excellent exaust flow, use a dual pattern cam that is more duration and lift on the intake than the exaust to help the performance of these heads you have.