To discover exactly which parts you require use the on-line schematic exploded diagram - it will even give you some idea of where and how to fit those new parts.
Access thirty-three schematic parts-list fiches for K10P K11P K15P 1968 USA (E03).
With these K10P K11P K15P 1968 USA (E03) partsfiches you have access to three hundred ninety spares.