What car is this in and what's the weight? And what kind of rear suspension and what's the tire size? If your suspension is up for 10s, you're probably looking at 4.30 or 4.56 gears and an Edelbrock Super Victor dominator flange intake (2891 for standard ports or 2893 for Max Wedge sized ports) intake with
Holley 0-8896-1 Holley 4500 Dominator Carburetors | Summit Racing
Along with this cam and springs plus any potential machine work that the .657 I/.661 E lifts that the 1.6 will produce may require.
DODGE Howards Cams 720152-08 Howards Cams Mechanical Flat Tappet Camshafts | Summit Racing
