If it was readily on hand... .528 solid with 1.6 rockers would idle mildly lumpy "like 340 stock" in that cid and not dramatically shift the torque hardly at all, just allow it to hp longer yet stay broad in the power curve like stock.
Generically put... a 278-280 degree advertised duration with .500-.550 lift and about 242-248 @.050 110-112, with maybe a few degree adv on the intake lobe.
Converter?